diff --git a/apps/openmw_test_suite/detournavigator/recastmeshbuilder.cpp b/apps/openmw_test_suite/detournavigator/recastmeshbuilder.cpp
index a227df8031..a2a47722d1 100644
--- a/apps/openmw_test_suite/detournavigator/recastmeshbuilder.cpp
+++ b/apps/openmw_test_suite/detournavigator/recastmeshbuilder.cpp
@@ -21,19 +21,23 @@ namespace
     struct DetourNavigatorRecastMeshBuilderTest : Test
     {
         Settings mSettings;
-        RecastMeshBuilder mBuilder;
+        TileBounds mBounds;
 
         DetourNavigatorRecastMeshBuilderTest()
-            : mBuilder(mSettings)
         {
             mSettings.mRecastScaleFactor = 1.0f;
             mSettings.mTrianglesPerChunk = 256;
+            mBounds.mMin = osg::Vec2f(-std::numeric_limits<float>::max() * std::numeric_limits<float>::epsilon(),
+                                      -std::numeric_limits<float>::max() * std::numeric_limits<float>::epsilon());
+            mBounds.mMax = osg::Vec2f(std::numeric_limits<float>::max() * std::numeric_limits<float>::epsilon(),
+                                      std::numeric_limits<float>::max() * std::numeric_limits<float>::epsilon());
         }
     };
 
     TEST_F(DetourNavigatorRecastMeshBuilderTest, create_for_empty_should_return_empty)
     {
-        const auto recastMesh = mBuilder.create();
+        RecastMeshBuilder builder(mSettings, mBounds);
+        const auto recastMesh = builder.create();
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>());
         EXPECT_EQ(recastMesh->getIndices(), std::vector<int>());
     }
@@ -43,8 +47,9 @@ namespace
         btTriangleMesh mesh;
         mesh.addTriangle(btVector3(-1, -1, 0), btVector3(-1, 1, 0), btVector3(1, -1, 0));
         btBvhTriangleMeshShape shape(&mesh, true);
-        mBuilder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity());
-        const auto recastMesh = mBuilder.create();
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity());
+        const auto recastMesh = builder.create();
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             1, 0, -1,
             -1, 0, 1,
@@ -58,9 +63,10 @@ namespace
         btTriangleMesh mesh;
         mesh.addTriangle(btVector3(-1, -1, 0), btVector3(-1, 1, 0), btVector3(1, -1, 0));
         btBvhTriangleMeshShape shape(&mesh, true);
-        mBuilder.addObject(static_cast<const btCollisionShape&>(shape),
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape),
                            btTransform(btMatrix3x3::getIdentity().scaled(btVector3(1, 2, 3)), btVector3(1, 2, 3)));
-        const auto recastMesh = mBuilder.create();
+        const auto recastMesh = builder.create();
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             2, 3, 0,
             0, 3, 4,
@@ -73,8 +79,9 @@ namespace
     {
         const std::array<btScalar, 4> heightfieldData {{0, 0, 0, 0}};
         btHeightfieldTerrainShape shape(2, 2, heightfieldData.data(), 1, 0, 0, 2, PHY_FLOAT, false);
-        mBuilder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity());
-        const auto recastMesh = mBuilder.create();
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity());
+        const auto recastMesh = builder.create();
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             -0.5, 0, -0.5,
             -0.5, 0, 0.5,
@@ -89,8 +96,9 @@ namespace
     TEST_F(DetourNavigatorRecastMeshBuilderTest, add_box_shape_should_produce_12_triangles)
     {
         btBoxShape shape(btVector3(1, 1, 2));
-        mBuilder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity());
-        const auto recastMesh = mBuilder.create();
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity());
+        const auto recastMesh = builder.create();
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             1, 2, 1,
             -1, 2, 1,
@@ -130,8 +138,9 @@ namespace
         shape.addChildShape(btTransform::getIdentity(), &triangle1);
         shape.addChildShape(btTransform::getIdentity(), &box);
         shape.addChildShape(btTransform::getIdentity(), &triangle2);
-        mBuilder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity());
-        const auto recastMesh = mBuilder.create();
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity());
+        const auto recastMesh = builder.create();
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             1, 0, -1,
             -1, 0, 1,
@@ -173,9 +182,10 @@ namespace
         btBvhTriangleMeshShape triangle(&mesh, true);
         btCompoundShape shape;
         shape.addChildShape(btTransform::getIdentity(), &triangle);
-        mBuilder.addObject(static_cast<const btCollisionShape&>(shape),
-                           btTransform(btMatrix3x3::getIdentity().scaled(btVector3(1, 2, 3)), btVector3(1, 2, 3)));
-        const auto recastMesh = mBuilder.create();
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape),
+                          btTransform(btMatrix3x3::getIdentity().scaled(btVector3(1, 2, 3)), btVector3(1, 2, 3)));
+        const auto recastMesh = builder.create();
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             2, 3, 0,
             0, 3, 4,
@@ -192,9 +202,10 @@ namespace
         btCompoundShape shape;
         shape.addChildShape(btTransform(btMatrix3x3::getIdentity().scaled(btVector3(1, 2, 3)), btVector3(1, 2, 3)),
                             &triangle);
-        mBuilder.addObject(static_cast<const btCollisionShape&>(shape),
-                           btTransform(btMatrix3x3::getIdentity().scaled(btVector3(1, 2, 3)), btVector3(1, 2, 3)));
-        const auto recastMesh = mBuilder.create();
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape),
+                          btTransform(btMatrix3x3::getIdentity().scaled(btVector3(1, 2, 3)), btVector3(1, 2, 3)));
+        const auto recastMesh = builder.create();
         EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
             3, 12, 2,
             1, 12, 10,
@@ -202,4 +213,104 @@ namespace
         }));
         EXPECT_EQ(recastMesh->getIndices(), std::vector<int>({0, 1, 2}));
     }
+
+    TEST_F(DetourNavigatorRecastMeshBuilderTest, without_bounds_add_transformed_compound_shape_with_transformed_bhv_triangle_shape_should_not_filter_by_bounds)
+    {
+        btTriangleMesh mesh;
+        mesh.addTriangle(btVector3(-1, -1, 0), btVector3(-1, 1, 0), btVector3(1, -1, 0));
+        mesh.addTriangle(btVector3(-3, -3, 0), btVector3(-3, -2, 0), btVector3(-2, -3, 0));
+        btBvhTriangleMeshShape shape(&mesh, true);
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity());
+        const auto recastMesh = builder.create();
+        EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
+            1, 0, -1,
+            -1, 0, 1,
+            -1, 0, -1,
+            -2, 0, -3,
+            -3, 0, -2,
+            -3, 0, -3,
+        }));
+        EXPECT_EQ(recastMesh->getIndices(), std::vector<int>({0, 1, 2, 3, 4, 5}));
+    }
+
+    TEST_F(DetourNavigatorRecastMeshBuilderTest, with_bounds_add_transformed_compound_shape_with_transformed_bhv_triangle_shape_should_filter_by_bounds)
+    {
+        mSettings.mRecastScaleFactor = 0.1f;
+        mBounds.mMin = osg::Vec2f(-3, -3) * mSettings.mRecastScaleFactor;
+        mBounds.mMax = osg::Vec2f(-2, -2) * mSettings.mRecastScaleFactor;
+        btTriangleMesh mesh;
+        mesh.addTriangle(btVector3(-1, -1, 0), btVector3(-1, 1, 0), btVector3(1, -1, 0));
+        mesh.addTriangle(btVector3(-3, -3, 0), btVector3(-3, -2, 0), btVector3(-2, -3, 0));
+        btBvhTriangleMeshShape shape(&mesh, true);
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape), btTransform::getIdentity());
+        const auto recastMesh = builder.create();
+        EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
+            -0.2f, 0, -0.3f,
+            -0.3f, 0, -0.2f,
+            -0.3f, 0, -0.3f,
+        }));
+        EXPECT_EQ(recastMesh->getIndices(), std::vector<int>({0, 1, 2}));
+    }
+
+    TEST_F(DetourNavigatorRecastMeshBuilderTest, with_bounds_add_rotated_by_x_bhv_triangle_shape_should_filter_by_bounds)
+    {
+        mBounds.mMin = osg::Vec2f(-5, -5);
+        mBounds.mMax = osg::Vec2f(5, -3);
+        btTriangleMesh mesh;
+        mesh.addTriangle(btVector3(0, -1, -1), btVector3(0, -1, -1), btVector3(0, 1, -1));
+        mesh.addTriangle(btVector3(0, -3, -3), btVector3(0, -3, -2), btVector3(0, -2, -3));
+        btBvhTriangleMeshShape shape(&mesh, true);
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape),
+                          btTransform(btQuaternion(btVector3(1, 0, 0), static_cast<btScalar>(-osg::PI_4))));
+        const auto recastMesh = builder.create();
+        EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
+            0, -0.70710659027099609375, -3.535533905029296875,
+            0, 0.707107067108154296875, -3.535533905029296875,
+            0, 2.384185791015625e-07, -4.24264049530029296875,
+        }));
+        EXPECT_EQ(recastMesh->getIndices(), std::vector<int>({0, 1, 2}));
+    }
+
+    TEST_F(DetourNavigatorRecastMeshBuilderTest, with_bounds_add_rotated_by_y_bhv_triangle_shape_should_filter_by_bounds)
+    {
+        mBounds.mMin = osg::Vec2f(-5, -5);
+        mBounds.mMax = osg::Vec2f(-3, 5);
+        btTriangleMesh mesh;
+        mesh.addTriangle(btVector3(-1, 0, -1), btVector3(-1, 0, 1), btVector3(1, 0, -1));
+        mesh.addTriangle(btVector3(-3, 0, -3), btVector3(-3, 0, -2), btVector3(-2, 0, -3));
+        btBvhTriangleMeshShape shape(&mesh, true);
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape),
+                          btTransform(btQuaternion(btVector3(0, 1, 0), static_cast<btScalar>(osg::PI_4))));
+        const auto recastMesh = builder.create();
+        EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
+            -3.535533905029296875, -0.70710659027099609375, 0,
+            -3.535533905029296875, 0.707107067108154296875, 0,
+            -4.24264049530029296875, 2.384185791015625e-07, 0,
+        }));
+        EXPECT_EQ(recastMesh->getIndices(), std::vector<int>({0, 1, 2}));
+    }
+
+    TEST_F(DetourNavigatorRecastMeshBuilderTest, with_bounds_add_rotated_by_z_bhv_triangle_shape_should_filter_by_bounds)
+    {
+        mBounds.mMin = osg::Vec2f(-5, -5);
+        mBounds.mMax = osg::Vec2f(-1, -1);
+        btTriangleMesh mesh;
+        mesh.addTriangle(btVector3(-1, -1, 0), btVector3(-1, 1, 0), btVector3(1, -1, 0));
+        mesh.addTriangle(btVector3(-3, -3, 0), btVector3(-3, -2, 0), btVector3(-2, -3, 0));
+        btBvhTriangleMeshShape shape(&mesh, true);
+        RecastMeshBuilder builder(mSettings, mBounds);
+        builder.addObject(static_cast<const btCollisionShape&>(shape),
+                          btTransform(btQuaternion(btVector3(0, 0, 1), static_cast<btScalar>(osg::PI_4))));
+        const auto recastMesh = builder.create();
+        EXPECT_EQ(recastMesh->getVertices(), std::vector<float>({
+            0.707107067108154296875, 0, -3.535533905029296875,
+            -0.70710659027099609375, 0, -3.535533905029296875,
+            2.384185791015625e-07, 0, -4.24264049530029296875,
+        }));
+        EXPECT_EQ(recastMesh->getIndices(), std::vector<int>({0, 1, 2}));
+    }
 }
diff --git a/components/CMakeLists.txt b/components/CMakeLists.txt
index f7aea8f379..fbb74a65a7 100644
--- a/components/CMakeLists.txt
+++ b/components/CMakeLists.txt
@@ -168,6 +168,7 @@ add_component_dir(detournavigator
     asyncnavmeshupdater
     chunkytrimesh
     recastmesh
+    tilecachedrecastmeshmanager
     )
 
 set (ESM_UI ${CMAKE_SOURCE_DIR}/files/ui/contentselector.ui
diff --git a/components/detournavigator/asyncnavmeshupdater.cpp b/components/detournavigator/asyncnavmeshupdater.cpp
index b809fc27c9..fcfc342ebf 100644
--- a/components/detournavigator/asyncnavmeshupdater.cpp
+++ b/components/detournavigator/asyncnavmeshupdater.cpp
@@ -40,8 +40,9 @@ namespace DetourNavigator
         return stream << "unknown";
     }
 
-    AsyncNavMeshUpdater::AsyncNavMeshUpdater(const Settings& settings)
-        : mSettings(std::cref(settings))
+    AsyncNavMeshUpdater::AsyncNavMeshUpdater(const Settings& settings, TileCachedRecastMeshManager& recastMeshManager)
+        : mSettings(settings)
+        , mRecastMeshManager(recastMeshManager)
         , mShouldStop()
         , mThread([&] { process(); })
     {
@@ -57,11 +58,11 @@ namespace DetourNavigator
         mThread.join();
     }
 
-    void AsyncNavMeshUpdater::post(const osg::Vec3f& agentHalfExtents, const std::shared_ptr<RecastMesh>& recastMesh,
+    void AsyncNavMeshUpdater::post(const osg::Vec3f& agentHalfExtents,
         const std::shared_ptr<NavMeshCacheItem>& navMeshCacheItem, const TilePosition& playerTile,
         const std::set<TilePosition>& changedTiles)
     {
-        setRecastMesh(recastMesh);
+        log("post jobs playerTile=", playerTile);
 
         if (changedTiles.empty())
             return;
@@ -107,9 +108,9 @@ namespace DetourNavigator
 
         setFirstStart(start);
 
-        const auto recastMesh = getRecastMesh();
+        const auto recastMesh = mRecastMeshManager.get().getMesh(job.mChangedTile);
 
-        const auto status = updateNavMesh(job.mAgentHalfExtents, *recastMesh, job.mChangedTile, mSettings,
+        const auto status = updateNavMesh(job.mAgentHalfExtents, recastMesh.get(), job.mChangedTile, mSettings,
             *job.mNavMeshCacheItem);
 
         const auto finish = std::chrono::steady_clock::now();
@@ -162,18 +163,6 @@ namespace DetourNavigator
             writeToFile(*job.mNavMeshCacheItem->mValue.lock(), mSettings.get().mNavMeshPathPrefix, navMeshRevision);
     }
 
-    std::shared_ptr<RecastMesh> AsyncNavMeshUpdater::getRecastMesh()
-    {
-        const std::lock_guard<std::mutex> lock(mRecastMeshMutex);
-        return mRecastMesh;
-    }
-
-    void AsyncNavMeshUpdater::setRecastMesh(const std::shared_ptr<RecastMesh>& value)
-    {
-        const std::lock_guard<std::mutex> lock(mRecastMeshMutex);
-        mRecastMesh = value;
-    }
-
     std::chrono::steady_clock::time_point AsyncNavMeshUpdater::getFirstStart()
     {
         const std::lock_guard<std::mutex> lock(mFirstStartMutex);
diff --git a/components/detournavigator/asyncnavmeshupdater.hpp b/components/detournavigator/asyncnavmeshupdater.hpp
index 721b89cec7..e31446a92a 100644
--- a/components/detournavigator/asyncnavmeshupdater.hpp
+++ b/components/detournavigator/asyncnavmeshupdater.hpp
@@ -2,7 +2,7 @@
 #define OPENMW_COMPONENTS_DETOURNAVIGATOR_ASYNCNAVMESHUPDATER_H
 
 #include "navmeshcacheitem.hpp"
-#include "recastmesh.hpp"
+#include "tilecachedrecastmeshmanager.hpp"
 #include "tileposition.hpp"
 
 #include <osg/Vec3f>
@@ -25,12 +25,11 @@ namespace DetourNavigator
     class AsyncNavMeshUpdater
     {
     public:
-        AsyncNavMeshUpdater(const Settings& settings);
+        AsyncNavMeshUpdater(const Settings& settings, TileCachedRecastMeshManager& recastMeshManager);
         ~AsyncNavMeshUpdater();
 
-        void post(const osg::Vec3f& agentHalfExtents, const std::shared_ptr<RecastMesh>& recastMesh,
-            const std::shared_ptr<NavMeshCacheItem>& navMeshCacheItem, const TilePosition& playerTile,
-            const std::set<TilePosition>& changedTiles);
+        void post(const osg::Vec3f& agentHalfExtents, const std::shared_ptr<NavMeshCacheItem>& mNavMeshCacheItem,
+            const TilePosition& playerTile, const std::set<TilePosition>& changedTiles);
 
         void wait();
 
@@ -51,13 +50,12 @@ namespace DetourNavigator
         using Jobs = std::priority_queue<Job, std::deque<Job>>;
 
         std::reference_wrapper<const Settings> mSettings;
+        std::reference_wrapper<TileCachedRecastMeshManager> mRecastMeshManager;
         std::atomic_bool mShouldStop;
         std::mutex mMutex;
         std::condition_variable mHasJob;
         std::condition_variable mDone;
         Jobs mJobs;
-        std::mutex mRecastMeshMutex;
-        std::shared_ptr<RecastMesh> mRecastMesh;
         std::mutex mFirstStartMutex;
         boost::optional<std::chrono::steady_clock::time_point> mFirstStart;
         std::thread mThread;
@@ -72,10 +70,6 @@ namespace DetourNavigator
 
         void writeDebugFiles(const Job& job, const RecastMesh& recastMesh) const;
 
-        std::shared_ptr<RecastMesh> getRecastMesh();
-
-        void setRecastMesh(const std::shared_ptr<RecastMesh>& value);
-
         std::chrono::steady_clock::time_point getFirstStart();
 
         void setFirstStart(const std::chrono::steady_clock::time_point& value);
diff --git a/components/detournavigator/cachedrecastmeshmanager.cpp b/components/detournavigator/cachedrecastmeshmanager.cpp
index 60306ecc68..3699bc77d0 100644
--- a/components/detournavigator/cachedrecastmeshmanager.cpp
+++ b/components/detournavigator/cachedrecastmeshmanager.cpp
@@ -3,9 +3,10 @@
 
 namespace DetourNavigator
 {
-    CachedRecastMeshManager::CachedRecastMeshManager(const Settings& settings)
-        : mImpl(settings)
-    {}
+    CachedRecastMeshManager::CachedRecastMeshManager(const Settings& settings, const TileBounds& bounds)
+        : mImpl(settings, bounds)
+    {
+    }
 
     bool CachedRecastMeshManager::addObject(std::size_t id, const btCollisionShape& shape, const btTransform& transform)
     {
@@ -29,4 +30,9 @@ namespace DetourNavigator
             mCached = mImpl.getMesh();
         return mCached;
     }
+
+    bool CachedRecastMeshManager::isEmpty() const
+    {
+        return mImpl.isEmpty();
+    }
 }
diff --git a/components/detournavigator/cachedrecastmeshmanager.hpp b/components/detournavigator/cachedrecastmeshmanager.hpp
index 6705a26f19..5185c38169 100644
--- a/components/detournavigator/cachedrecastmeshmanager.hpp
+++ b/components/detournavigator/cachedrecastmeshmanager.hpp
@@ -10,7 +10,7 @@ namespace DetourNavigator
     class CachedRecastMeshManager
     {
     public:
-        CachedRecastMeshManager(const Settings& settings);
+        CachedRecastMeshManager(const Settings& settings, const TileBounds& bounds);
 
         bool addObject(std::size_t id, const btCollisionShape& shape, const btTransform& transform);
 
@@ -18,6 +18,8 @@ namespace DetourNavigator
 
         std::shared_ptr<RecastMesh> getMesh();
 
+        bool isEmpty() const;
+
     private:
         RecastMeshManager mImpl;
         std::shared_ptr<RecastMesh> mCached;
diff --git a/components/detournavigator/gettilespositions.hpp b/components/detournavigator/gettilespositions.hpp
index 96ab89fd73..6f5a372600 100644
--- a/components/detournavigator/gettilespositions.hpp
+++ b/components/detournavigator/gettilespositions.hpp
@@ -17,7 +17,7 @@ namespace DetourNavigator
 
     template <class Callback>
     void getTilesPositions(const osg::Vec3f& aabbMin, const osg::Vec3f& aabbMax,
-                           const Settings& settings, Callback&& callback)
+        const Settings& settings, Callback&& callback)
     {
         auto min = toNavMeshCoordinates(settings, aabbMin);
         auto max = toNavMeshCoordinates(settings, aabbMax);
@@ -42,7 +42,7 @@ namespace DetourNavigator
 
     template <class Callback>
     void getTilesPositions(const btCollisionShape& shape, const btTransform& transform,
-                           const Settings& settings, Callback&& callback)
+        const Settings& settings, Callback&& callback)
     {
         btVector3 aabbMin;
         btVector3 aabbMax;
diff --git a/components/detournavigator/makenavmesh.cpp b/components/detournavigator/makenavmesh.cpp
index fb2fb2bb5b..4d54eac6cb 100644
--- a/components/detournavigator/makenavmesh.cpp
+++ b/components/detournavigator/makenavmesh.cpp
@@ -7,6 +7,7 @@
 #include "settings.hpp"
 #include "settingsutils.hpp"
 #include "sharednavmesh.hpp"
+#include "settingsutils.hpp"
 
 #include <DetourNavMesh.h>
 #include <DetourNavMeshBuilder.h>
@@ -269,8 +270,9 @@ namespace DetourNavigator
         return navMesh;
     }
 
-    UpdateNavMeshStatus updateNavMesh(const osg::Vec3f& agentHalfExtents, const RecastMesh& recastMesh,
-        const TilePosition& changedTile, const Settings& settings, NavMeshCacheItem& navMeshCacheItem)
+    UpdateNavMeshStatus updateNavMesh(const osg::Vec3f& agentHalfExtents,
+        const RecastMesh* recastMesh, const TilePosition& changedTile, const Settings& settings,
+        NavMeshCacheItem& navMeshCacheItem)
     {
         log("update NavMesh with mutiple tiles:",
             " agentHeight=", std::setprecision(std::numeric_limits<float>::max_exponent10),
@@ -298,8 +300,14 @@ namespace DetourNavigator
 
         incRev.mNavMeshChanged = removed;
 
-        const auto& boundsMin = recastMesh.getBoundsMin();
-        const auto& boundsMax = recastMesh.getBoundsMax();
+        if (!recastMesh)
+        {
+            log("ignore add tile: recastMesh is null");
+            return makeUpdateNavMeshStatus(removed, false);
+        }
+
+        const auto& boundsMin = recastMesh->getBoundsMin();
+        const auto& boundsMax = recastMesh->getBoundsMax();
 
         if (boundsMin == boundsMax)
         {
@@ -311,7 +319,7 @@ namespace DetourNavigator
         const osg::Vec3f tileBorderMin(tileBounds.mMin.x(), boundsMin.y() - 1, tileBounds.mMin.y());
         const osg::Vec3f tileBorderMax(tileBounds.mMax.x(), boundsMax.y() + 1, tileBounds.mMax.y());
 
-        auto navMeshData = makeNavMeshTileData(agentHalfExtents, recastMesh, x, y,
+        auto navMeshData = makeNavMeshTileData(agentHalfExtents, *recastMesh, x, y,
             tileBorderMin, tileBorderMax, settings);
 
         if (!navMeshData.mValue)
diff --git a/components/detournavigator/makenavmesh.hpp b/components/detournavigator/makenavmesh.hpp
index 96e655be8b..c2767dc75a 100644
--- a/components/detournavigator/makenavmesh.hpp
+++ b/components/detournavigator/makenavmesh.hpp
@@ -4,6 +4,7 @@
 #include "settings.hpp"
 #include "navmeshcacheitem.hpp"
 #include "tileposition.hpp"
+#include "tilebounds.hpp"
 
 #include <osg/Vec3f>
 
@@ -30,8 +31,8 @@ namespace DetourNavigator
 
     NavMeshPtr makeEmptyNavMesh(const Settings& settings);
 
-    UpdateNavMeshStatus updateNavMesh(const osg::Vec3f& agentHalfExtents, const RecastMesh& recastMesh,
-            const TilePosition& changedTile, const Settings& settings, NavMeshCacheItem& navMeshCacheItem);
+    UpdateNavMeshStatus updateNavMesh(const osg::Vec3f& agentHalfExtents, const RecastMesh* recastMesh,
+        const TilePosition& changedTile, const Settings& settings, NavMeshCacheItem& navMeshCacheItem);
 }
 
 #endif
diff --git a/components/detournavigator/navmeshcacheitem.hpp b/components/detournavigator/navmeshcacheitem.hpp
index ffea1fbddc..537f6df5d7 100644
--- a/components/detournavigator/navmeshcacheitem.hpp
+++ b/components/detournavigator/navmeshcacheitem.hpp
@@ -11,11 +11,10 @@ namespace DetourNavigator
     {
         SharedNavMesh mValue;
         std::size_t mGeneration;
-        std::size_t mRecastMeshRevision;
         std::atomic_size_t mNavMeshRevision;
 
-        NavMeshCacheItem(const NavMeshPtr& value, std::size_t generation, std::size_t revision)
-            : mValue(value), mGeneration(generation), mRecastMeshRevision(revision), mNavMeshRevision(0) {}
+        NavMeshCacheItem(const NavMeshPtr& value, std::size_t generation)
+            : mValue(value), mGeneration(generation), mNavMeshRevision(0) {}
     };
 }
 
diff --git a/components/detournavigator/navmeshmanager.cpp b/components/detournavigator/navmeshmanager.cpp
index ad9a3a5e70..a9fb700b70 100644
--- a/components/detournavigator/navmeshmanager.cpp
+++ b/components/detournavigator/navmeshmanager.cpp
@@ -3,6 +3,7 @@
 #include "exceptions.hpp"
 #include "gettilespositions.hpp"
 #include "makenavmesh.hpp"
+#include "navmeshcacheitem.hpp"
 #include "settings.hpp"
 #include "sharednavmesh.hpp"
 
@@ -17,14 +18,14 @@ namespace DetourNavigator
     NavMeshManager::NavMeshManager(const Settings& settings)
         : mSettings(settings)
         , mRecastMeshManager(settings)
-        , mAsyncNavMeshUpdater(settings)
-    {}
+        , mAsyncNavMeshUpdater(settings, mRecastMeshManager)
+    {
+    }
 
     bool NavMeshManager::addObject(std::size_t id, const btCollisionShape& shape, const btTransform& transform)
     {
         if (!mRecastMeshManager.addObject(id, shape, transform))
             return false;
-        ++mRevision;
         addChangedTiles(shape, transform);
         return true;
     }
@@ -34,7 +35,6 @@ namespace DetourNavigator
         const auto object = mRecastMeshManager.removeObject(id);
         if (!object)
             return false;
-        ++mRevision;
         addChangedTiles(*object->mShape, object->mTransform);
         return true;
     }
@@ -45,8 +45,7 @@ namespace DetourNavigator
         if (cached != mCache.end())
             return;
         mCache.insert(std::make_pair(agentHalfExtents,
-            std::make_shared<NavMeshCacheItem>(makeEmptyNavMesh(mSettings), ++mGenerationCounter, mRevision))
-        );
+            std::make_shared<NavMeshCacheItem>(makeEmptyNavMesh(mSettings), ++mGenerationCounter)));
         log("cache add for agent=", agentHalfExtents);
     }
 
@@ -58,18 +57,15 @@ namespace DetourNavigator
     void NavMeshManager::update(osg::Vec3f playerPosition, const osg::Vec3f& agentHalfExtents)
     {
         const auto& cached = getCached(agentHalfExtents);
-        if (cached->mRecastMeshRevision >= mRevision)
-            return;
-        cached->mRecastMeshRevision = mRevision;
         const auto changedTiles = mChangedTiles.find(agentHalfExtents);
         if (changedTiles != mChangedTiles.end())
         {
             playerPosition *= mSettings.mRecastScaleFactor;
             std::swap(playerPosition.y(), playerPosition.z());
-            mAsyncNavMeshUpdater.post(agentHalfExtents, mRecastMeshManager.getMesh(), cached,
-                                      getTilePosition(mSettings, playerPosition), changedTiles->second);
+            mAsyncNavMeshUpdater.post(agentHalfExtents, cached, getTilePosition(mSettings, playerPosition),
+                                      changedTiles->second);
+            log("cache update posted for agent=", agentHalfExtents, " changedTiles=", changedTiles->second.size());
             mChangedTiles.erase(changedTiles);
-            log("cache update posted for agent=", agentHalfExtents);
         }
     }
 
diff --git a/components/detournavigator/navmeshmanager.hpp b/components/detournavigator/navmeshmanager.hpp
index 63733cf018..21328454e2 100644
--- a/components/detournavigator/navmeshmanager.hpp
+++ b/components/detournavigator/navmeshmanager.hpp
@@ -40,9 +40,8 @@ namespace DetourNavigator
         std::map<osg::Vec3f, std::shared_ptr<NavMeshCacheItem>> getNavMeshes() const;
 
     private:
-        std::size_t mRevision = 0;
         const Settings& mSettings;
-        CachedRecastMeshManager mRecastMeshManager;
+        TileCachedRecastMeshManager mRecastMeshManager;
         std::map<osg::Vec3f, std::shared_ptr<NavMeshCacheItem>> mCache;
         std::map<osg::Vec3f, std::set<TilePosition>> mChangedTiles;
         AsyncNavMeshUpdater mAsyncNavMeshUpdater;
diff --git a/components/detournavigator/recastmeshbuilder.cpp b/components/detournavigator/recastmeshbuilder.cpp
index 1e0d2dfc80..a34b114acb 100644
--- a/components/detournavigator/recastmeshbuilder.cpp
+++ b/components/detournavigator/recastmeshbuilder.cpp
@@ -27,9 +27,13 @@ namespace DetourNavigator
 {
     using BulletHelpers::makeProcessTriangleCallback;
 
-    RecastMeshBuilder::RecastMeshBuilder(const Settings& settings)
+    RecastMeshBuilder::RecastMeshBuilder(const Settings& settings, const TileBounds& bounds)
         : mSettings(settings)
-    {}
+        , mBounds(bounds)
+    {
+        mBounds.mMin /= mSettings.get().mRecastScaleFactor;
+        mBounds.mMax /= mSettings.get().mRecastScaleFactor;
+    }
 
     void RecastMeshBuilder::addObject(const btCollisionShape& shape, const btTransform& transform)
     {
@@ -54,7 +58,7 @@ namespace DetourNavigator
 
     void RecastMeshBuilder::addObject(const btConcaveShape& shape, const btTransform& transform)
     {
-        return addObject(shape, makeProcessTriangleCallback([&] (btVector3* triangle, int, int)
+        return addObject(shape, transform, makeProcessTriangleCallback([&] (btVector3* triangle, int, int)
         {
             for (std::size_t i = 3; i > 0; --i)
                 addTriangleVertex(transform(triangle[i - 1]));
@@ -63,7 +67,7 @@ namespace DetourNavigator
 
     void RecastMeshBuilder::addObject(const btHeightfieldTerrainShape& shape, const btTransform& transform)
     {
-        return addObject(shape, makeProcessTriangleCallback([&] (btVector3* triangle, int, int)
+        return addObject(shape, transform, makeProcessTriangleCallback([&] (btVector3* triangle, int, int)
         {
             for (std::size_t i = 0; i < 3; ++i)
                 addTriangleVertex(transform(triangle[i]));
@@ -111,11 +115,29 @@ namespace DetourNavigator
         mVertices.clear();
     }
 
-    void RecastMeshBuilder::addObject(const btConcaveShape& shape, btTriangleCallback&& callback)
+    void RecastMeshBuilder::addObject(const btConcaveShape& shape, const btTransform& transform,
+                                      btTriangleCallback&& callback)
     {
         btVector3 aabbMin;
         btVector3 aabbMax;
         shape.getAabb(btTransform::getIdentity(), aabbMin, aabbMax);
+        const btVector3 boundsMinMin(mBounds.mMin.x(), mBounds.mMin.y(), 0);
+        const btVector3 boundsMinMax(mBounds.mMin.x(), mBounds.mMax.y(), 0);
+        const btVector3 boundsMaxMin(mBounds.mMax.x(), mBounds.mMin.y(), 0);
+        const btVector3 boundsMaxMax(mBounds.mMax.x(), mBounds.mMax.y(), 0);
+        const auto inversedTransform = transform.inverse();
+        const auto localBoundsMinMin = inversedTransform(boundsMinMin);
+        const auto localBoundsMinMax = inversedTransform(boundsMinMax);
+        const auto localBoundsMaxMin = inversedTransform(boundsMaxMin);
+        const auto localBoundsMaxMax = inversedTransform(boundsMaxMax);
+        aabbMin.setX(std::min({localBoundsMinMin.x(), localBoundsMinMax.x(),
+                               localBoundsMaxMin.x(), localBoundsMaxMax.x()}));
+        aabbMin.setY(std::min({localBoundsMinMin.y(), localBoundsMinMax.y(),
+                               localBoundsMaxMin.y(), localBoundsMaxMax.y()}));
+        aabbMax.setX(std::max({localBoundsMinMin.x(), localBoundsMinMax.x(),
+                               localBoundsMaxMin.x(), localBoundsMaxMax.x()}));
+        aabbMax.setY(std::max({localBoundsMinMin.y(), localBoundsMinMax.y(),
+                               localBoundsMaxMin.y(), localBoundsMaxMax.y()}));
         shape.processAllTriangles(&callback, aabbMin, aabbMax);
     }
 
diff --git a/components/detournavigator/recastmeshbuilder.hpp b/components/detournavigator/recastmeshbuilder.hpp
index 28ca1f713a..d06f2cdd65 100644
--- a/components/detournavigator/recastmeshbuilder.hpp
+++ b/components/detournavigator/recastmeshbuilder.hpp
@@ -2,6 +2,7 @@
 #define OPENMW_COMPONENTS_DETOURNAVIGATOR_RECASTMESHBUILDER_H
 
 #include "recastmesh.hpp"
+#include "tilebounds.hpp"
 
 class btBoxShape;
 class btCollisionShape;
@@ -17,7 +18,7 @@ namespace DetourNavigator
     class RecastMeshBuilder
     {
     public:
-        RecastMeshBuilder(const Settings& settings);
+        RecastMeshBuilder(const Settings& settings, const TileBounds& bounds);
 
         void addObject(const btCollisionShape& shape, const btTransform& transform);
 
@@ -35,10 +36,11 @@ namespace DetourNavigator
 
     private:
         std::reference_wrapper<const Settings> mSettings;
+        TileBounds mBounds;
         std::vector<int> mIndices;
         std::vector<float> mVertices;
 
-        void addObject(const btConcaveShape& shape, btTriangleCallback&& callback);
+        void addObject(const btConcaveShape& shape, const btTransform& transform, btTriangleCallback&& callback);
 
         void addTriangleVertex(const btVector3& worldPosition);
 
diff --git a/components/detournavigator/recastmeshmanager.cpp b/components/detournavigator/recastmeshmanager.cpp
index ccfa253724..919609190a 100644
--- a/components/detournavigator/recastmeshmanager.cpp
+++ b/components/detournavigator/recastmeshmanager.cpp
@@ -4,9 +4,9 @@
 
 namespace DetourNavigator
 {
-    RecastMeshManager::RecastMeshManager(const Settings& settings)
+    RecastMeshManager::RecastMeshManager(const Settings& settings, const TileBounds& bounds)
         : mShouldRebuild(false)
-        , mMeshBuilder(settings)
+        , mMeshBuilder(settings, bounds)
     {
     }
 
@@ -35,6 +35,11 @@ namespace DetourNavigator
         return mMeshBuilder.create();
     }
 
+    bool RecastMeshManager::isEmpty() const
+    {
+        return mObjects.empty();
+    }
+
     void RecastMeshManager::rebuild()
     {
         if (!mShouldRebuild)
diff --git a/components/detournavigator/recastmeshmanager.hpp b/components/detournavigator/recastmeshmanager.hpp
index 429430707b..f2aa7f871d 100644
--- a/components/detournavigator/recastmeshmanager.hpp
+++ b/components/detournavigator/recastmeshmanager.hpp
@@ -22,7 +22,7 @@ namespace DetourNavigator
             btTransform mTransform;
         };
 
-        RecastMeshManager(const Settings& settings);
+        RecastMeshManager(const Settings& settings, const TileBounds& bounds);
 
         bool addObject(std::size_t id, const btCollisionShape& shape, const btTransform& transform);
 
@@ -30,6 +30,8 @@ namespace DetourNavigator
 
         std::shared_ptr<RecastMesh> getMesh();
 
+        bool isEmpty() const;
+
     private:
         bool mShouldRebuild;
         RecastMeshBuilder mMeshBuilder;
diff --git a/components/detournavigator/settingsutils.hpp b/components/detournavigator/settingsutils.hpp
index d0d51e1670..0b327717f5 100644
--- a/components/detournavigator/settingsutils.hpp
+++ b/components/detournavigator/settingsutils.hpp
@@ -2,6 +2,7 @@
 #define OPENMW_COMPONENTS_DETOURNAVIGATOR_SETTINGSUTILS_H
 
 #include "settings.hpp"
+#include "tilebounds.hpp"
 #include "tileposition.hpp"
 #include "tilebounds.hpp"
 
diff --git a/components/detournavigator/tilecachedrecastmeshmanager.cpp b/components/detournavigator/tilecachedrecastmeshmanager.cpp
new file mode 100644
index 0000000000..9c4f63e59f
--- /dev/null
+++ b/components/detournavigator/tilecachedrecastmeshmanager.cpp
@@ -0,0 +1,71 @@
+#include "tilecachedrecastmeshmanager.hpp"
+#include "makenavmesh.hpp"
+#include "gettilespositions.hpp"
+#include "settingsutils.hpp"
+
+namespace DetourNavigator
+{
+    TileCachedRecastMeshManager::TileCachedRecastMeshManager(const Settings& settings)
+        : mSettings(settings)
+    {
+    }
+
+    bool TileCachedRecastMeshManager::addObject(std::size_t id, const btCollisionShape& shape,
+                                                const btTransform& transform)
+    {
+        bool result = false;
+        auto& tilesPositions = mObjectsTilesPositions[id];
+        const auto border = getBorderSize(mSettings);
+        getTilesPositions(shape, transform, mSettings, [&] (const TilePosition& tilePosition)
+            {
+                std::unique_lock<std::mutex> lock(mTilesMutex);
+                auto tile = mTiles.find(tilePosition);
+                if (tile == mTiles.end())
+                {
+                    auto tileBounds = makeTileBounds(mSettings, tilePosition);
+                    tileBounds.mMin -= osg::Vec2f(border, border);
+                    tileBounds.mMax += osg::Vec2f(border, border);
+                    tile = mTiles.insert(std::make_pair(tilePosition,
+                            CachedRecastMeshManager(mSettings, tileBounds))).first;
+                }
+                if (tile->second.addObject(id, shape, transform))
+                {
+                    lock.unlock();
+                    tilesPositions.push_back(tilePosition);
+                    result = true;
+                }
+            });
+        return result;
+    }
+
+    boost::optional<RecastMeshManager::Object> TileCachedRecastMeshManager::removeObject(std::size_t id)
+    {
+        const auto object = mObjectsTilesPositions.find(id);
+        if (object == mObjectsTilesPositions.end())
+            return boost::none;
+        boost::optional<RecastMeshManager::Object> result;
+        for (const auto& tilePosition : object->second)
+        {
+            std::unique_lock<std::mutex> lock(mTilesMutex);
+            const auto tile = mTiles.find(tilePosition);
+            if (tile == mTiles.end())
+                continue;
+            const auto tileResult = tile->second.removeObject(id);
+            if (tile->second.isEmpty())
+                mTiles.erase(tile);
+            lock.unlock();
+            if (tileResult && !result)
+                result = tileResult;
+        }
+        return result;
+    }
+
+    std::shared_ptr<RecastMesh> TileCachedRecastMeshManager::getMesh(const TilePosition& tilePosition)
+    {
+        const std::lock_guard<std::mutex> lock(mTilesMutex);
+        const auto it = mTiles.find(tilePosition);
+        if (it == mTiles.end())
+            return nullptr;
+        return it->second.getMesh();
+    }
+}
diff --git a/components/detournavigator/tilecachedrecastmeshmanager.hpp b/components/detournavigator/tilecachedrecastmeshmanager.hpp
new file mode 100644
index 0000000000..f957dec1dc
--- /dev/null
+++ b/components/detournavigator/tilecachedrecastmeshmanager.hpp
@@ -0,0 +1,31 @@
+#ifndef OPENMW_COMPONENTS_DETOURNAVIGATOR_TILECACHEDRECASTMESHMANAGER_H
+#define OPENMW_COMPONENTS_DETOURNAVIGATOR_TILECACHEDRECASTMESHMANAGER_H
+
+#include "cachedrecastmeshmanager.hpp"
+#include "tileposition.hpp"
+
+#include <map>
+#include <mutex>
+
+namespace DetourNavigator
+{
+    class TileCachedRecastMeshManager
+    {
+    public:
+        TileCachedRecastMeshManager(const Settings& settings);
+
+        bool addObject(std::size_t id, const btCollisionShape& shape, const btTransform& transform);
+
+        boost::optional<RecastMeshManager::Object> removeObject(std::size_t id);
+
+        std::shared_ptr<RecastMesh> getMesh(const TilePosition& tilePosition);
+
+    private:
+        const Settings& mSettings;
+        std::mutex mTilesMutex;
+        std::map<TilePosition, CachedRecastMeshManager> mTiles;
+        std::unordered_map<std::size_t, std::vector<TilePosition>> mObjectsTilesPositions;
+    };
+}
+
+#endif