diff --git a/Source/Engine/Core/Math/Color.cs b/Source/Engine/Core/Math/Color.cs
index 711ffb7d9..dbfd70c7e 100644
--- a/Source/Engine/Core/Math/Color.cs
+++ b/Source/Engine/Core/Math/Color.cs
@@ -11,7 +11,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.ColorConverter))]
 #endif
-    partial struct Color
+    partial struct Color : Json.ICustomValueEquals
     {
         /// <summary>
         /// The size of the <see cref="Color" /> type, in bytes.
@@ -201,6 +201,13 @@ namespace FlaxEngine
             A = values[3];
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Color)other;
+            return Equals(ref o);
+        }
+
         /// <inheritdoc />
         public override bool Equals(object value)
         {
diff --git a/Source/Engine/Core/Math/Double2.cs b/Source/Engine/Core/Math/Double2.cs
index 9594b22cb..51fcf32d5 100644
--- a/Source/Engine/Core/Math/Double2.cs
+++ b/Source/Engine/Core/Math/Double2.cs
@@ -65,7 +65,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Double2Converter))]
 #endif
-    partial struct Double2 : IEquatable<Double2>, IFormattable
+    partial struct Double2 : IEquatable<Double2>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0:F2} Y:{1:F2}";
 
@@ -1574,6 +1574,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Double2)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Double2" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Double3.cs b/Source/Engine/Core/Math/Double3.cs
index cb26cf071..4dccc1fb3 100644
--- a/Source/Engine/Core/Math/Double3.cs
+++ b/Source/Engine/Core/Math/Double3.cs
@@ -66,7 +66,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Double3Converter))]
 #endif
-    partial struct Double3 : IEquatable<Double3>, IFormattable
+    partial struct Double3 : IEquatable<Double3>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0:F2} Y:{1:F2} Z:{2:F2}";
 
@@ -1872,6 +1872,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Double3)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Double3" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Double4.cs b/Source/Engine/Core/Math/Double4.cs
index 70d27cb28..bf176e6ff 100644
--- a/Source/Engine/Core/Math/Double4.cs
+++ b/Source/Engine/Core/Math/Double4.cs
@@ -66,7 +66,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Double4Converter))]
 #endif
-    partial struct Double4 : IEquatable<Double4>, IFormattable
+    partial struct Double4 : IEquatable<Double4>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0:F2} Y:{1:F2} Z:{2:F2} W:{3:F2}";
 
@@ -1372,6 +1372,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Double4)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Double4" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Float2.cs b/Source/Engine/Core/Math/Float2.cs
index 1b70dd0a6..5bb81ec3a 100644
--- a/Source/Engine/Core/Math/Float2.cs
+++ b/Source/Engine/Core/Math/Float2.cs
@@ -60,7 +60,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Float2Converter))]
 #endif
-    partial struct Float2 : IEquatable<Float2>, IFormattable
+    partial struct Float2 : IEquatable<Float2>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0:F2} Y:{1:F2}";
 
@@ -1650,6 +1650,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Float2)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Float2" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Float3.cs b/Source/Engine/Core/Math/Float3.cs
index 5e8dceed6..50554345b 100644
--- a/Source/Engine/Core/Math/Float3.cs
+++ b/Source/Engine/Core/Math/Float3.cs
@@ -60,7 +60,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Float3Converter))]
 #endif
-    partial struct Float3 : IEquatable<Float3>, IFormattable
+    partial struct Float3 : IEquatable<Float3>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0:F2} Y:{1:F2} Z:{2:F2}";
 
@@ -1904,6 +1904,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Float3)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Float3" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Float4.cs b/Source/Engine/Core/Math/Float4.cs
index b6eb6dd9e..26abf4b2e 100644
--- a/Source/Engine/Core/Math/Float4.cs
+++ b/Source/Engine/Core/Math/Float4.cs
@@ -60,7 +60,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Float4Converter))]
 #endif
-    partial struct Float4 : IEquatable<Float4>, IFormattable
+    partial struct Float4 : IEquatable<Float4>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0:F2} Y:{1:F2} Z:{2:F2} W:{3:F2}";
 
@@ -1412,6 +1412,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Float4)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Float4" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Int2.cs b/Source/Engine/Core/Math/Int2.cs
index 4a4107252..32a273307 100644
--- a/Source/Engine/Core/Math/Int2.cs
+++ b/Source/Engine/Core/Math/Int2.cs
@@ -14,7 +14,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Int2Converter))]
 #endif
-    partial struct Int2 : IEquatable<Int2>, IFormattable
+    partial struct Int2 : IEquatable<Int2>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0} Y:{1}";
 
@@ -940,6 +940,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Int2)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Int2" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Int3.cs b/Source/Engine/Core/Math/Int3.cs
index 78e4600c3..81bb8026e 100644
--- a/Source/Engine/Core/Math/Int3.cs
+++ b/Source/Engine/Core/Math/Int3.cs
@@ -14,7 +14,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Int3Converter))]
 #endif
-    partial struct Int3 : IEquatable<Int3>, IFormattable
+    partial struct Int3 : IEquatable<Int3>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0} Y:{1} Z:{2}";
 
@@ -1023,6 +1023,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Int3)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Int3" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Int4.cs b/Source/Engine/Core/Math/Int4.cs
index e180ccb31..bbccadab4 100644
--- a/Source/Engine/Core/Math/Int4.cs
+++ b/Source/Engine/Core/Math/Int4.cs
@@ -14,7 +14,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Int4Converter))]
 #endif
-    partial struct Int4 : IEquatable<Int4>, IFormattable
+    partial struct Int4 : IEquatable<Int4>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0} Y:{1} Z:{2} W:{3}";
 
@@ -881,6 +881,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Int4)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Int4" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Quaternion.cs b/Source/Engine/Core/Math/Quaternion.cs
index d89b71488..cf51fac50 100644
--- a/Source/Engine/Core/Math/Quaternion.cs
+++ b/Source/Engine/Core/Math/Quaternion.cs
@@ -60,7 +60,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.QuaternionConverter))]
 #endif
-    partial struct Quaternion : IEquatable<Quaternion>, IFormattable
+    partial struct Quaternion : IEquatable<Quaternion>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0:F2} Y:{1:F2} Z:{2:F2} W:{3:F2}";
 
@@ -1681,6 +1681,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Quaternion)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Tests whether one quaternion is near another quaternion.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Rectangle.cs b/Source/Engine/Core/Math/Rectangle.cs
index 81c689d48..8e3c2b6c4 100644
--- a/Source/Engine/Core/Math/Rectangle.cs
+++ b/Source/Engine/Core/Math/Rectangle.cs
@@ -6,7 +6,7 @@ using System.Runtime.CompilerServices;
 
 namespace FlaxEngine
 {
-    partial struct Rectangle : IEquatable<Rectangle>
+    partial struct Rectangle : IEquatable<Rectangle>, Json.ICustomValueEquals
     {
         /// <summary>
         /// A <see cref="Rectangle"/> which represents an empty space.
@@ -523,6 +523,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Rectangle)other;
+            return Equals(ref o);
+        }
+
         /// <inheritdoc />
         public override string ToString()
         {
diff --git a/Source/Engine/Core/Math/Transform.cs b/Source/Engine/Core/Math/Transform.cs
index fc16a501b..90c0c36c9 100644
--- a/Source/Engine/Core/Math/Transform.cs
+++ b/Source/Engine/Core/Math/Transform.cs
@@ -16,7 +16,7 @@ using System.Runtime.InteropServices;
 namespace FlaxEngine
 {
     [Serializable]
-    partial struct Transform : IEquatable<Transform>, IFormattable
+    partial struct Transform : IEquatable<Transform>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "Translation:{0} Orientation:{1} Scale:{2}";
 
@@ -673,6 +673,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Transform)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Tests whether one transform is near another transform.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Vector2.cs b/Source/Engine/Core/Math/Vector2.cs
index 8e1599513..3f63c4e9c 100644
--- a/Source/Engine/Core/Math/Vector2.cs
+++ b/Source/Engine/Core/Math/Vector2.cs
@@ -73,7 +73,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Vector2Converter))]
 #endif
-    public unsafe partial struct Vector2 : IEquatable<Vector2>, IFormattable
+    public unsafe partial struct Vector2 : IEquatable<Vector2>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0:F2} Y:{1:F2}";
 
@@ -1774,6 +1774,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Vector2)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Vector2" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Vector3.cs b/Source/Engine/Core/Math/Vector3.cs
index 5e01a7a6c..388317810 100644
--- a/Source/Engine/Core/Math/Vector3.cs
+++ b/Source/Engine/Core/Math/Vector3.cs
@@ -73,7 +73,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Vector3Converter))]
 #endif
-    public unsafe partial struct Vector3 : IEquatable<Vector3>, IFormattable
+    public unsafe partial struct Vector3 : IEquatable<Vector3>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0:F2} Y:{1:F2} Z:{2:F2}";
 
@@ -2133,6 +2133,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Vector3)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Vector3" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Core/Math/Vector4.cs b/Source/Engine/Core/Math/Vector4.cs
index 909e35157..776bbd3dc 100644
--- a/Source/Engine/Core/Math/Vector4.cs
+++ b/Source/Engine/Core/Math/Vector4.cs
@@ -72,7 +72,7 @@ namespace FlaxEngine
 #if FLAX_EDITOR
     [System.ComponentModel.TypeConverter(typeof(TypeConverters.Vector4Converter))]
 #endif
-    public partial struct Vector4 : IEquatable<Vector4>, IFormattable
+    public partial struct Vector4 : IEquatable<Vector4>, IFormattable, Json.ICustomValueEquals
     {
         private static readonly string _formatString = "X:{0:F2} Y:{1:F2} Z:{2:F2} W:{3:F2}";
 
@@ -1499,6 +1499,13 @@ namespace FlaxEngine
             }
         }
 
+        /// <inheritdoc />
+        public bool ValueEquals(object other)
+        {
+            var o = (Vector4)other;
+            return Equals(ref o);
+        }
+
         /// <summary>
         /// Determines whether the specified <see cref="Vector4" /> is equal to this instance.
         /// </summary>
diff --git a/Source/Engine/Graphics/Models/CollisionProxy.h b/Source/Engine/Graphics/Models/CollisionProxy.h
index eba17cf4e..2ecdce756 100644
--- a/Source/Engine/Graphics/Models/CollisionProxy.h
+++ b/Source/Engine/Graphics/Models/CollisionProxy.h
@@ -6,7 +6,7 @@
 #include "Engine/Core/Math/Transform.h"
 #include "Engine/Core/Math/Ray.h"
 #include "Engine/Core/Math/CollisionsHelper.h"
-#include "Engine/Core/Math/Packed.h"
+#include "Engine/Core/Math/Half.h"
 #include "Engine/Core/Collections/Array.h"
 #include "Engine/Graphics/PixelFormat.h"
 
@@ -58,7 +58,7 @@ public:
         else if (positionsFormat == PixelFormat::R16G16B16A16_Float)
         {
             LOOP_BEGIN()
-#define GET_POS(idx) (Float3)*(const Half4*)((const byte*)positions + positionsStride * idx)
+#define GET_POS(idx) ((const Half4*)((const byte*)positions + positionsStride * idx))->ToFloat3()
                 Triangles.Add({ GET_POS(i0), GET_POS(i1), GET_POS(i2) });
 #undef GET_POS
             LOOP_END()
diff --git a/Source/Engine/Level/MeshReference.cs b/Source/Engine/Level/MeshReference.cs
index 14ef0c72b..cb87e9769 100644
--- a/Source/Engine/Level/MeshReference.cs
+++ b/Source/Engine/Level/MeshReference.cs
@@ -13,7 +13,7 @@ namespace FlaxEngine
             public bool ValueEquals(object other)
             {
                 var o = (MeshReference)other;
-                return JsonSerializer.ValueEquals(Actor, o.Actor) &&
+                return JsonSerializer.SceneObjectEquals(Actor, o.Actor) &&
                        LODIndex == o.LODIndex &&
                        MeshIndex == o.MeshIndex;
             }
diff --git a/Source/Engine/Level/Prefabs/Prefab.Apply.cpp b/Source/Engine/Level/Prefabs/Prefab.Apply.cpp
index 0bed02f0b..378b706ed 100644
--- a/Source/Engine/Level/Prefabs/Prefab.Apply.cpp
+++ b/Source/Engine/Level/Prefabs/Prefab.Apply.cpp
@@ -227,9 +227,9 @@ public:
 void PrefabInstanceData::CollectPrefabInstances(PrefabInstancesData& prefabInstancesData, const Guid& prefabId, Actor* defaultInstance, Actor* targetActor)
 {
     ScopeLock lock(PrefabManager::PrefabsReferencesLocker);
-    if (PrefabManager::PrefabsReferences.ContainsKey(prefabId))
+    if (auto instancesPtr = PrefabManager::PrefabsReferences.TryGet(prefabId))
     {
-        auto& instances = PrefabManager::PrefabsReferences[prefabId];
+        auto& instances = *instancesPtr;
         int32 usedCount = 0;
         for (int32 instanceIndex = 0; instanceIndex < instances.Count(); instanceIndex++)
         {
diff --git a/Source/Engine/Serialization/JsonSerializer.cs b/Source/Engine/Serialization/JsonSerializer.cs
index 4321ffa36..86e4ead8b 100644
--- a/Source/Engine/Serialization/JsonSerializer.cs
+++ b/Source/Engine/Serialization/JsonSerializer.cs
@@ -270,8 +270,8 @@ namespace FlaxEngine.Json
 
             // Special case when saving reference to prefab object and the objects are different but the point to the same prefab object
             // In that case, skip saving reference as it's defined in prefab (will be populated via IdsMapping during deserialization)
-            if (objA is SceneObject sceneA && objB is SceneObject sceneB && sceneA && sceneB && sceneA.HasPrefabLink && sceneB.HasPrefabLink)
-                return sceneA.PrefabObjectID == sceneB.PrefabObjectID;
+            if (objA is SceneObject sceneObjA && objB is SceneObject sceneObjB && sceneObjA && sceneObjB && sceneObjA.HasPrefabLink && sceneObjB.HasPrefabLink)
+                return sceneObjA.PrefabObjectID == sceneObjB.PrefabObjectID;
 
             // Comparing an Int32 and Int64 both of the same value returns false, make types the same then compare
             if (objA.GetType() != objB.GetType())
@@ -286,7 +286,6 @@ namespace FlaxEngine.Json
                            type == typeof(Int32) ||
                            type == typeof(UInt32) ||
                            type == typeof(Int64) ||
-                           type == typeof(SByte) ||
                            type == typeof(UInt64);
                 }
                 if (IsInteger(objA) && IsInteger(objB))
@@ -301,6 +300,12 @@ namespace FlaxEngine.Json
             {
                 if (aList.Count != bList.Count)
                     return false;
+                for (int i = 0; i < aList.Count; i++)
+                {
+                    if (!ValueEquals(aList[i], bList[i]))
+                        return false;
+                }
+                return true;
             }
             if (objA is IEnumerable aEnumerable && objB is IEnumerable bEnumerable)
             {
@@ -316,8 +321,29 @@ namespace FlaxEngine.Json
                 return !bEnumerator.MoveNext();
             }
 
-            if (objA is ICustomValueEquals customValueEquals && objA.GetType() == objB.GetType())
+            // Custom comparer
+            if (objA is ICustomValueEquals customValueEquals)
                 return customValueEquals.ValueEquals(objB);
+
+            // If type contains SceneObject references then it needs to use custom comparision that handles prefab links (see SceneObjectEquals)
+            if (objA.GetType().IsStructure())
+            {
+                var contract = Settings.ContractResolver.ResolveContract(objA.GetType());
+                if (contract is JsonObjectContract objContract)
+                {
+                    foreach (var property in objContract.Properties)
+                    {
+                        var valueProvider = property.ValueProvider;
+                        var propA = valueProvider.GetValue(objA);
+                        var propB = valueProvider.GetValue(objB);
+                        if (!ValueEquals(propA, propB))
+                            return false;
+                    }
+                    return true;
+                }
+            }
+
+            // Generic fallback
             return objA.Equals(objB);
 #endif
         }