diff --git a/apps/openmw/mwbase/scriptmanager.hpp b/apps/openmw/mwbase/scriptmanager.hpp
index 67b9593a20..be62722139 100644
--- a/apps/openmw/mwbase/scriptmanager.hpp
+++ b/apps/openmw/mwbase/scriptmanager.hpp
@@ -1,7 +1,7 @@
 #ifndef GAME_MWBASE_SCRIPTMANAGER_H
 #define GAME_MWBASE_SCRIPTMANAGER_H
 
-#include <string>
+#include <string_view>
 
 namespace Interpreter
 {
@@ -38,10 +38,10 @@ namespace MWBase
 
             virtual void clear() = 0;
 
-            virtual bool run (const std::string& name, Interpreter::Context& interpreterContext) = 0;
+            virtual bool run(std::string_view name, Interpreter::Context& interpreterContext) = 0;
             ///< Run the script with the given name (compile first, if not compiled yet)
 
-            virtual bool compile (const std::string& name) = 0;
+            virtual bool compile(std::string_view name) = 0;
             ///< Compile script with the given namen
             /// \return Success?
 
diff --git a/apps/openmw/mwgui/container.cpp b/apps/openmw/mwgui/container.cpp
index 52fc04ddf2..f8bc3b57ba 100644
--- a/apps/openmw/mwgui/container.cpp
+++ b/apps/openmw/mwgui/container.cpp
@@ -261,7 +261,7 @@ namespace MWGui
                     if (!script.empty() && MWBase::Environment::get().getWorld()->getScriptsEnabled())
                     {
                         MWScript::InterpreterContext interpreterContext (&ptr.getRefData().getLocals(), ptr);
-                        MWBase::Environment::get().getScriptManager()->run(std::string{script}, interpreterContext);
+                        MWBase::Environment::get().getScriptManager()->run(script, interpreterContext);
                     }
 
                     // Clean up summoned creatures as well
diff --git a/apps/openmw/mwscript/globalscripts.cpp b/apps/openmw/mwscript/globalscripts.cpp
index 26cef4f54f..35a666234b 100644
--- a/apps/openmw/mwscript/globalscripts.cpp
+++ b/apps/openmw/mwscript/globalscripts.cpp
@@ -309,17 +309,16 @@ namespace MWScript
 
     Locals& GlobalScripts::getLocals(std::string_view name)
     {
-        std::string name2 = ::Misc::StringUtils::lowerCase (name);
-        auto iter = mScripts.find (name2);
+        auto iter = mScripts.find(name);
 
         if (iter==mScripts.end())
         {
-            const ESM::Script *script = mStore.get<ESM::Script>().find(name2);
+            const ESM::Script *script = mStore.get<ESM::Script>().find(name);
 
             auto desc = std::make_shared<GlobalScriptDesc>();
             desc->mLocals.configure (*script);
 
-            iter = mScripts.insert (std::make_pair (name2, desc)).first;
+            iter = mScripts.emplace(name, desc).first;
         }
 
         return iter->second->mLocals;
@@ -327,8 +326,7 @@ namespace MWScript
 
     const Locals* GlobalScripts::getLocalsIfPresent(std::string_view name) const
     {
-        std::string name2 = ::Misc::StringUtils::lowerCase (name);
-        auto iter = mScripts.find (name2);
+        auto iter = mScripts.find(name);
         if (iter==mScripts.end())
             return nullptr;
         return &iter->second->mLocals;
diff --git a/apps/openmw/mwscript/globalscripts.hpp b/apps/openmw/mwscript/globalscripts.hpp
index 92272c05bd..fa1602fc80 100644
--- a/apps/openmw/mwscript/globalscripts.hpp
+++ b/apps/openmw/mwscript/globalscripts.hpp
@@ -3,13 +3,14 @@
 
 #include <string>
 #include <string_view>
-#include <map>
+#include <unordered_map>
 #include <memory>
 #include <utility>
 #include <variant>
-
 #include <cstdint>
 
+#include <components/misc/algorithm.hpp>
+
 #include "locals.hpp"
 
 #include "../mwworld/ptr.hpp"
@@ -51,7 +52,7 @@ namespace MWScript
     class GlobalScripts
     {
             const MWWorld::ESMStore& mStore;
-            std::map<std::string, std::shared_ptr<GlobalScriptDesc> > mScripts;
+            std::unordered_map<std::string, std::shared_ptr<GlobalScriptDesc>, ::Misc::StringUtils::CiHash, ::Misc::StringUtils::CiEqual> mScripts;
 
         public:
 
diff --git a/apps/openmw/mwscript/scriptmanagerimp.cpp b/apps/openmw/mwscript/scriptmanagerimp.cpp
index a0ae49ad98..7a22cda8b1 100644
--- a/apps/openmw/mwscript/scriptmanagerimp.cpp
+++ b/apps/openmw/mwscript/scriptmanagerimp.cpp
@@ -39,14 +39,14 @@ namespace MWScript
         std::sort (mScriptBlacklist.begin(), mScriptBlacklist.end());
     }
 
-    bool ScriptManager::compile (const std::string& name)
+    bool ScriptManager::compile(std::string_view name)
     {
         mParser.reset();
         mErrorHandler.reset();
 
         if (const ESM::Script *script = mStore.get<ESM::Script>().find (name))
         {
-            mErrorHandler.setContext(name);
+            mErrorHandler.setContext(script->mId);
 
             bool Success = true;
             try
@@ -89,10 +89,10 @@ namespace MWScript
         return false;
     }
 
-    bool ScriptManager::run (const std::string& name, Interpreter::Context& interpreterContext)
+    bool ScriptManager::run(std::string_view name, Interpreter::Context& interpreterContext)
     {
         // compile script
-        ScriptCollection::iterator iter = mScripts.find (name);
+        auto iter = mScripts.find(name);
 
         if (iter==mScripts.end())
         {
@@ -167,27 +167,25 @@ namespace MWScript
 
     const Compiler::Locals& ScriptManager::getLocals(std::string_view name)
     {
-        std::string name2 = Misc::StringUtils::lowerCase (name);
-
         {
-            auto iter = mScripts.find (name2);
+            auto iter = mScripts.find(name);
 
             if (iter!=mScripts.end())
                 return iter->second.mLocals;
         }
 
         {
-            auto iter = mOtherLocals.find (name2);
+            auto iter = mOtherLocals.find(name);
 
             if (iter!=mOtherLocals.end())
                 return iter->second;
         }
 
-        if (const ESM::Script *script = mStore.get<ESM::Script>().search (name2))
+        if (const ESM::Script* script = mStore.get<ESM::Script>().search(name))
         {
             Compiler::Locals locals;
 
-            const Compiler::ContextOverride override(mErrorHandler, name2 + "[local variables]");
+            const Compiler::ContextOverride override(mErrorHandler, std::string{name} + "[local variables]");
 
             std::istringstream stream (script->mScriptText);
             Compiler::QuickFileParser parser (mErrorHandler, mCompilerContext, locals);
@@ -207,12 +205,12 @@ namespace MWScript
                 locals.clear();
             }
 
-            auto iter = mOtherLocals.emplace(name2, locals).first;
+            auto iter = mOtherLocals.emplace(name, locals).first;
 
             return iter->second;
         }
 
-        throw std::logic_error("script " + name2 + " does not exist");
+        throw std::logic_error("script " + std::string{name} + " does not exist");
     }
 
     GlobalScripts& ScriptManager::getGlobalScripts()
diff --git a/apps/openmw/mwscript/scriptmanagerimp.hpp b/apps/openmw/mwscript/scriptmanagerimp.hpp
index d32d6e822c..4926f4b61f 100644
--- a/apps/openmw/mwscript/scriptmanagerimp.hpp
+++ b/apps/openmw/mwscript/scriptmanagerimp.hpp
@@ -53,11 +53,9 @@ namespace MWScript
                 {}
             };
 
-            typedef std::map<std::string, CompiledScript> ScriptCollection;
-
-            ScriptCollection mScripts;
+            std::unordered_map<std::string, CompiledScript, ::Misc::StringUtils::CiHash, ::Misc::StringUtils::CiEqual> mScripts;
             GlobalScripts mGlobalScripts;
-            std::map<std::string, Compiler::Locals> mOtherLocals;
+            std::unordered_map<std::string, Compiler::Locals, ::Misc::StringUtils::CiHash, ::Misc::StringUtils::CiEqual> mOtherLocals;
             std::vector<std::string> mScriptBlacklist;
 
         public:
@@ -68,10 +66,10 @@ namespace MWScript
 
             void clear() override;
 
-            bool run (const std::string& name, Interpreter::Context& interpreterContext) override;
+            bool run(std::string_view name, Interpreter::Context& interpreterContext) override;
             ///< Run the script with the given name (compile first, if not compiled yet)
 
-            bool compile (const std::string& name) override;
+            bool compile(std::string_view name) override;
             ///< Compile script with the given namen
             /// \return Success?