diff --git a/Source/Editor/CustomEditors/Dedicated/ActorEditor.cs b/Source/Editor/CustomEditors/Dedicated/ActorEditor.cs
index d312f64b2..81ca1af34 100644
--- a/Source/Editor/CustomEditors/Dedicated/ActorEditor.cs
+++ b/Source/Editor/CustomEditors/Dedicated/ActorEditor.cs
@@ -525,7 +525,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
                 var restored = actor.AddScript(removed.PrefabObject.GetType());
                 var prefabId = actor.PrefabID;
                 var prefabObjectId = restored.PrefabObjectID;
-                Script.Internal_LinkPrefab(FlaxEngine.Object.GetUnmanagedPtr(restored), ref prefabId, ref prefabObjectId);
+                Script.Internal_LinkPrefab(FlaxEngine.Object.GetUnmanagedPtr(restored), prefabId, prefabObjectId);
                 string data = JsonSerializer.Serialize(removed.PrefabObject);
                 JsonSerializer.Deserialize(restored, data);
 
@@ -547,7 +547,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
                 string data = JsonSerializer.Serialize(removedActor.PrefabObject);
                 JsonSerializer.Deserialize(restored, data);
                 Presenter.Owner.SceneContext.Spawn(restored, parentActor, removedActor.OrderInParent);
-                Actor.Internal_LinkPrefab(FlaxEngine.Object.GetUnmanagedPtr(restored), ref prefabId, ref prefabObjectId);
+                Actor.Internal_LinkPrefab(FlaxEngine.Object.GetUnmanagedPtr(restored), prefabId, prefabObjectId);
                 return;
             }
 
diff --git a/Source/Editor/SceneGraph/Actors/CameraNode.cs b/Source/Editor/SceneGraph/Actors/CameraNode.cs
index 8f50b6284..853e140b7 100644
--- a/Source/Editor/SceneGraph/Actors/CameraNode.cs
+++ b/Source/Editor/SceneGraph/Actors/CameraNode.cs
@@ -56,7 +56,7 @@ namespace FlaxEditor.SceneGraph.Actors
                 return false;
             }
 
-            return Camera.Internal_IntersectsItselfEditor(FlaxEngine.Object.GetUnmanagedPtr(_actor), ref ray.Ray, out distance);
+            return Camera.Internal_IntersectsItselfEditor(FlaxEngine.Object.GetUnmanagedPtr(_actor), ray.Ray, out distance);
         }
 
         /// <inheritdoc />
diff --git a/Source/Editor/Undo/Actions/AddRemoveScriptAction.cs b/Source/Editor/Undo/Actions/AddRemoveScriptAction.cs
index 5374cf009..6578b58c9 100644
--- a/Source/Editor/Undo/Actions/AddRemoveScriptAction.cs
+++ b/Source/Editor/Undo/Actions/AddRemoveScriptAction.cs
@@ -191,7 +191,7 @@ namespace FlaxEditor.Actions
                 script.OrderInParent = _orderInParent;
             _orderInParent = script.OrderInParent; // Ensure order is correct for script that want to use it later
             if (_prefabObjectId != Guid.Empty)
-                SceneObject.Internal_LinkPrefab(Object.GetUnmanagedPtr(script), ref _prefabId, ref _prefabObjectId);
+                SceneObject.Internal_LinkPrefab(Object.GetUnmanagedPtr(script), _prefabId, _prefabObjectId);
             Editor.Instance.Scene.MarkSceneEdited(parentActor.Scene);
         }
     }
diff --git a/Source/Editor/Undo/Actions/BreakPrefabLinkAction.cs b/Source/Editor/Undo/Actions/BreakPrefabLinkAction.cs
index 037e414a1..d3a493b70 100644
--- a/Source/Editor/Undo/Actions/BreakPrefabLinkAction.cs
+++ b/Source/Editor/Undo/Actions/BreakPrefabLinkAction.cs
@@ -137,7 +137,7 @@ namespace FlaxEditor.Actions
                 var item = items[i];
                 var obj = Object.Find<Object>(ref item.ID);
                 if (obj != null)
-                    SceneObject.Internal_LinkPrefab(Object.GetUnmanagedPtr(obj), ref item.PrefabID, ref item.PrefabObjectID);
+                    SceneObject.Internal_LinkPrefab(Object.GetUnmanagedPtr(obj), item.PrefabID, item.PrefabObjectID);
             }
         }
 
diff --git a/Source/Editor/Undo/Actions/DeleteActorsAction.cs b/Source/Editor/Undo/Actions/DeleteActorsAction.cs
index 75594ecb9..36450dd5a 100644
--- a/Source/Editor/Undo/Actions/DeleteActorsAction.cs
+++ b/Source/Editor/Undo/Actions/DeleteActorsAction.cs
@@ -204,7 +204,7 @@ namespace FlaxEditor.Actions
                     Guid prefabId = _prefabIds[i];
                     if (prefabId != Guid.Empty)
                     {
-                        Actor.Internal_LinkPrefab(FlaxEngine.Object.GetUnmanagedPtr(actors[i]), ref prefabId, ref _prefabObjectIds[i]);
+                        Actor.Internal_LinkPrefab(FlaxEngine.Object.GetUnmanagedPtr(actors[i]), prefabId, _prefabObjectIds[i]);
                     }
                 }
             }
diff --git a/Source/Editor/Undo/Actions/ParentActorsAction.cs b/Source/Editor/Undo/Actions/ParentActorsAction.cs
index 312ce578d..5d89b7242 100644
--- a/Source/Editor/Undo/Actions/ParentActorsAction.cs
+++ b/Source/Editor/Undo/Actions/ParentActorsAction.cs
@@ -183,7 +183,7 @@ namespace FlaxEditor.Actions
                 {
                     var obj = Object.Find<SceneObject>(ref _idsForPrefab[i]);
                     if (obj != null && _prefabIds[i] != Guid.Empty)
-                        SceneObject.Internal_LinkPrefab(Object.GetUnmanagedPtr(obj), ref _prefabIds[i], ref _prefabObjectIds[i]);
+                        SceneObject.Internal_LinkPrefab(Object.GetUnmanagedPtr(obj), _prefabIds[i], _prefabObjectIds[i]);
                 }
             }
         }
diff --git a/Source/Engine/Level/Actor.cs b/Source/Engine/Level/Actor.cs
index 0670c5f2f..51b24e25f 100644
--- a/Source/Engine/Level/Actor.cs
+++ b/Source/Engine/Level/Actor.cs
@@ -80,7 +80,7 @@ namespace FlaxEngine
             set
             {
                 Quaternion.Euler(ref value, out var orientation);
-                Internal_SetOrientation(__unmanagedPtr, ref orientation);
+                Internal_SetOrientation(__unmanagedPtr, orientation);
             }
         }
 
@@ -98,7 +98,7 @@ namespace FlaxEngine
             set
             {
                 Quaternion.Euler(ref value, out var orientation);
-                Internal_SetLocalOrientation(__unmanagedPtr, ref orientation);
+                Internal_SetLocalOrientation(__unmanagedPtr, orientation);
             }
         }
 
diff --git a/Source/Engine/Render2D/Render2D.cs b/Source/Engine/Render2D/Render2D.cs
index 06eb03d5a..60230b95a 100644
--- a/Source/Engine/Render2D/Render2D.cs
+++ b/Source/Engine/Render2D/Render2D.cs
@@ -12,7 +12,7 @@ namespace FlaxEngine
         /// <param name="transform">The transformation to apply.</param>
         public static void PushTransform(Matrix3x3 transform)
         {
-            Internal_PushTransform(ref transform);
+            Internal_PushTransform(transform);
         }
 
         /// <summary>
@@ -21,7 +21,7 @@ namespace FlaxEngine
         /// <param name="clipRect">The axis aligned clipping mask rectangle.</param>
         public static void PushClip(Rectangle clipRect)
         {
-            Internal_PushClip(ref clipRect);
+            Internal_PushClip(clipRect);
         }
 
         /// <summary>
@@ -32,7 +32,7 @@ namespace FlaxEngine
         public static void DrawTexture(GPUTextureView rt, Rectangle rect)
         {
             var color = Color.White;
-            Internal_DrawTexture(FlaxEngine.Object.GetUnmanagedPtr(rt), ref rect, ref color);
+            Internal_DrawTexture(FlaxEngine.Object.GetUnmanagedPtr(rt), rect, color);
         }
 
         /// <summary>
@@ -43,7 +43,7 @@ namespace FlaxEngine
         public static void DrawTexture(GPUTexture t, Rectangle rect)
         {
             var color = Color.White;
-            Internal_DrawTexture1(FlaxEngine.Object.GetUnmanagedPtr(t), ref rect, ref color);
+            Internal_DrawTexture1(FlaxEngine.Object.GetUnmanagedPtr(t), rect, color);
         }
 
         /// <summary>
@@ -54,7 +54,7 @@ namespace FlaxEngine
         public static void DrawTexture(TextureBase t, Rectangle rect)
         {
             var color = Color.White;
-            Internal_DrawTexture2(FlaxEngine.Object.GetUnmanagedPtr(t), ref rect, ref color);
+            Internal_DrawTexture2(FlaxEngine.Object.GetUnmanagedPtr(t), rect, color);
         }
 
         /// <summary>
@@ -75,7 +75,7 @@ namespace FlaxEngine
         public static void DrawTexturePoint(GPUTexture t, Rectangle rect)
         {
             var color = Color.White;
-            Internal_DrawTexturePoint(FlaxEngine.Object.GetUnmanagedPtr(t), ref rect, ref color);
+            Internal_DrawTexturePoint(FlaxEngine.Object.GetUnmanagedPtr(t), rect, color);
         }
 
         /// <summary>
@@ -96,7 +96,7 @@ namespace FlaxEngine
         public static void DrawMaterial(MaterialBase material, Rectangle rect)
         {
             var color = Color.White;
-            Internal_DrawMaterial(FlaxEngine.Object.GetUnmanagedPtr(material), ref rect, ref color);
+            Internal_DrawMaterial(FlaxEngine.Object.GetUnmanagedPtr(material), rect, color);
         }
 
         /// <summary>
diff --git a/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Cache.cs b/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Cache.cs
index c85410a7a..bb969975b 100644
--- a/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Cache.cs
+++ b/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Cache.cs
@@ -19,7 +19,7 @@ namespace Flax.Build.Bindings
     partial class BindingsGenerator
     {
         private static readonly Dictionary<string, Type> TypeCache = new Dictionary<string, Type>();
-        private const int CacheVersion = 23;
+        private const int CacheVersion = 24;
 
         internal static void Write(BinaryWriter writer, string e)
         {
diff --git a/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Parsing.cs b/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Parsing.cs
index 14058aaf5..3bd9174a6 100644
--- a/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Parsing.cs
+++ b/Source/Tools/Flax.Build/Bindings/BindingsGenerator.Parsing.cs
@@ -3,6 +3,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Runtime.InteropServices;
 
 namespace Flax.Build.Bindings
 {
@@ -1041,7 +1042,12 @@ namespace Flax.Build.Bindings
             if (isGetter)
                 propertyInfo.Getter = functionInfo;
             else
+            {
                 propertyInfo.Setter = functionInfo;
+
+                // Setter value parameter should always be const, forces bindings to pass value as "in" instead of "ref"
+                CollectionsMarshal.AsSpan(functionInfo.Parameters)[0].IsConst = true;
+            }
             propertyInfo.DeprecatedMessage = functionInfo.DeprecatedMessage;
             propertyInfo.IsHidden |= functionInfo.IsHidden;
 
diff --git a/Source/Tools/Flax.Build/Bindings/ClassInfo.cs b/Source/Tools/Flax.Build/Bindings/ClassInfo.cs
index f2d82cc6e..07d0005d7 100644
--- a/Source/Tools/Flax.Build/Bindings/ClassInfo.cs
+++ b/Source/Tools/Flax.Build/Bindings/ClassInfo.cs
@@ -113,6 +113,7 @@ namespace Flax.Build.Bindings
                             {
                                 Name = "value",
                                 Type = fieldInfo.Type,
+                                IsConst = true,
                             },
                         },
                         IsVirtual = false,
diff --git a/Source/Tools/Flax.Build/Bindings/FunctionInfo.cs b/Source/Tools/Flax.Build/Bindings/FunctionInfo.cs
index d8b440ccd..c56cb2e63 100644
--- a/Source/Tools/Flax.Build/Bindings/FunctionInfo.cs
+++ b/Source/Tools/Flax.Build/Bindings/FunctionInfo.cs
@@ -17,6 +17,7 @@ namespace Flax.Build.Bindings
             public string DefaultValue;
             public string Attributes;
             public bool IsRef;
+            public bool IsConst;
             public bool IsOut;
             public bool IsThis;
             public bool IsParams;
@@ -36,6 +37,7 @@ namespace Flax.Build.Bindings
                 BindingsGenerator.Write(writer, Attributes);
                 // TODO: convert into flags
                 writer.Write(IsRef);
+                writer.Write(IsConst);
                 writer.Write(IsOut);
                 writer.Write(IsThis);
                 writer.Write(IsParams);
@@ -49,6 +51,7 @@ namespace Flax.Build.Bindings
                 Attributes = BindingsGenerator.Read(reader, Attributes);
                 // TODO: convert into flags
                 IsRef = reader.ReadBoolean();
+                IsConst = reader.ReadBoolean();
                 IsOut = reader.ReadBoolean();
                 IsThis = reader.ReadBoolean();
                 IsParams = reader.ReadBoolean();