diff --git a/Source/Editor/Windows/Assets/TextureWindow.cs b/Source/Editor/Windows/Assets/TextureWindow.cs
index 481c48f47..0ae8abe6d 100644
--- a/Source/Editor/Windows/Assets/TextureWindow.cs
+++ b/Source/Editor/Windows/Assets/TextureWindow.cs
@@ -4,7 +4,10 @@ using System.Xml;
 using FlaxEditor.Content;
 using FlaxEditor.Content.Import;
 using FlaxEditor.CustomEditors;
+using FlaxEditor.CustomEditors.Dedicated;
 using FlaxEditor.CustomEditors.Editors;
+using FlaxEditor.GUI;
+using FlaxEditor.Scripting;
 using FlaxEditor.Viewport.Previews;
 using FlaxEngine;
 using FlaxEngine.GUI;
@@ -18,47 +21,57 @@ namespace FlaxEditor.Windows.Assets
     /// <seealso cref="FlaxEditor.Windows.Assets.AssetEditorWindow" />
     public sealed class TextureWindow : AssetEditorWindowBase<Texture>
     {
+        private sealed class ProxyEditor : GenericEditor
+        {
+            public override void Initialize(LayoutElementsContainer layout)
+            {
+                var window = ((PropertiesProxy)Values[0])._window;
+                var texture = window?.Asset;
+                if (texture == null || !texture.IsLoaded)
+                {
+                    layout.Label("Loading...", TextAlignment.Center);
+                    return;
+                }
+
+                // Texture info
+                var general = layout.Group("General");
+                general.Label("Format: " + texture.Format);
+                general.Label(string.Format("Size: {0}x{1}", texture.Width, texture.Height));
+                general.Label("Mip levels: " + texture.MipLevels);
+                general.Label("Memory usage: " + Utilities.Utils.FormatBytesCount(texture.TotalMemoryUsage));
+
+                // Texture properties
+                var properties = layout.Group("Properties");
+                var textureGroup = new CustomValueContainer(new ScriptType(typeof(int)), texture.TextureGroup,
+                                                            (instance, index) => texture.TextureGroup,
+                                                            (instance, index, value) =>
+                                                            {
+                                                                texture.TextureGroup = (int)value;
+                                                                window.MarkAsEdited();
+                                                            });
+                properties.Property("Texture Group", textureGroup, new TextureGroupEditor(), "The texture group used by this texture.");
+
+                // Import settings
+                base.Initialize(layout);
+
+                // Reimport
+                layout.Space(10);
+                var reimportButton = layout.Button("Reimport");
+                reimportButton.Button.Clicked += () => ((PropertiesProxy)Values[0]).Reimport();
+            }
+        }
+
         /// <summary>
         /// The texture properties proxy object.
         /// </summary>
         [CustomEditor(typeof(ProxyEditor))]
         private sealed class PropertiesProxy
         {
-            private TextureWindow _window;
+            internal TextureWindow _window;
 
             [EditorOrder(1000), EditorDisplay("Import Settings", EditorDisplayAttribute.InlineStyle)]
             public TextureImportSettings ImportSettings = new TextureImportSettings();
 
-            public sealed class ProxyEditor : GenericEditor
-            {
-                public override void Initialize(LayoutElementsContainer layout)
-                {
-                    var window = ((PropertiesProxy)Values[0])._window;
-                    if (window == null)
-                    {
-                        layout.Label("Loading...", TextAlignment.Center);
-                        return;
-                    }
-
-                    // Texture properties
-                    {
-                        var texture = window.Asset;
-
-                        var group = layout.Group("General");
-                        group.Label("Format: " + texture.Format);
-                        group.Label(string.Format("Size: {0}x{1}", texture.Width, texture.Height));
-                        group.Label("Mip levels: " + texture.MipLevels);
-                        group.Label("Memory usage: " + Utilities.Utils.FormatBytesCount(texture.TotalMemoryUsage));
-                    }
-
-                    base.Initialize(layout);
-
-                    layout.Space(10);
-                    var reimportButton = layout.Button("Reimport");
-                    reimportButton.Button.Clicked += () => ((PropertiesProxy)Values[0]).Reimport();
-                }
-            }
-
             /// <summary>
             /// Gathers parameters from the specified texture.
             /// </summary>
@@ -110,7 +123,7 @@ namespace FlaxEditor.Windows.Assets
         private readonly SplitPanel _split;
         private readonly TexturePreview _preview;
         private readonly CustomEditorPresenter _propertiesEditor;
-
+        private readonly ToolStripButton _saveButton;
         private readonly PropertiesProxy _properties;
         private bool _isWaitingForLoad;
 
@@ -140,6 +153,7 @@ namespace FlaxEditor.Windows.Assets
             _propertiesEditor.Select(_properties);
 
             // Toolstrip
+            _saveButton = (ToolStripButton)_toolstrip.AddButton(Editor.Icons.Save64, Save).LinkTooltip("Save");
             _toolstrip.AddButton(Editor.Icons.Import64, () => Editor.ContentImporting.Reimport((BinaryAssetItem)Item)).LinkTooltip("Reimport");
             _toolstrip.AddSeparator();
             _toolstrip.AddButton(Editor.Icons.CenterView64, _preview.CenterView).LinkTooltip("Center view");
@@ -173,6 +187,14 @@ namespace FlaxEditor.Windows.Assets
             _isWaitingForLoad = true;
         }
 
+        /// <inheritdoc />
+        protected override void UpdateToolstrip()
+        {
+            _saveButton.Enabled = IsEdited;
+
+            base.UpdateToolstrip();
+        }
+
         /// <inheritdoc />
         protected override void OnClose()
         {
@@ -182,6 +204,21 @@ namespace FlaxEditor.Windows.Assets
             base.OnClose();
         }
 
+        /// <inheritdoc />
+        public override void Save()
+        {
+            if (!IsEdited)
+                return;
+
+            if (Asset.Save())
+            {
+                Editor.LogError("Cannot save asset.");
+                return;
+            }
+
+            ClearEditedFlag();
+        }
+
         /// <inheritdoc />
         public override void Update(float deltaTime)
         {
diff --git a/Source/Engine/Audio/AudioClip.cpp b/Source/Engine/Audio/AudioClip.cpp
index 3213850d3..7c1945803 100644
--- a/Source/Engine/Audio/AudioClip.cpp
+++ b/Source/Engine/Audio/AudioClip.cpp
@@ -401,7 +401,7 @@ Asset::LoadResult AudioClip::load()
     if (AudioHeader.Streamable)
     {
         // Do nothing because data streaming starts when any AudioSource requests the data
-        startStreaming(false);
+        StartStreaming(false);
         return LoadResult::Ok;
     }
 
@@ -450,7 +450,7 @@ Asset::LoadResult AudioClip::load()
 
 void AudioClip::unload(bool isReloading)
 {
-    stopStreaming();
+    StopStreaming();
     StreamingQueue.Clear();
     if (Buffers.HasItems())
     {
diff --git a/Source/Engine/Content/Asset.cpp b/Source/Engine/Content/Asset.cpp
index e8536f58d..5436cb6b9 100644
--- a/Source/Engine/Content/Asset.cpp
+++ b/Source/Engine/Content/Asset.cpp
@@ -111,6 +111,11 @@ Asset::Asset(const SpawnParams& params, const AssetInfo* info)
 {
 }
 
+int32 Asset::GetReferencesCount() const
+{
+    return (int32)Platform::AtomicRead(const_cast<int64 volatile*>(&_refCount));
+}
+
 String Asset::ToString() const
 {
     return String::Format(TEXT("{0}, {1}, {2}"), GetTypeName(), GetID(), GetPath());
@@ -435,6 +440,15 @@ void Asset::startLoading()
     _loadingTask->Start();
 }
 
+void Asset::releaseStorage()
+{
+}
+
+bool Asset::IsInternalType() const
+{
+    return false;
+}
+
 bool Asset::onLoad(LoadAssetTask* task)
 {
     // It may fail when task is cancelled and new one is created later (don't crash but just end with an error)
diff --git a/Source/Engine/Content/Asset.h b/Source/Engine/Content/Asset.h
index a831ee773..3d4ca2789 100644
--- a/Source/Engine/Content/Asset.h
+++ b/Source/Engine/Content/Asset.h
@@ -82,10 +82,7 @@ public:
     /// <summary>
     /// Gets asset's reference count. Asset will be automatically unloaded when this reaches zero.
     /// </summary>
-    API_PROPERTY() int32 GetReferencesCount() const
-    {
-        return (int32)Platform::AtomicRead(const_cast<int64 volatile*>(&_refCount));
-    }
+    API_PROPERTY() int32 GetReferencesCount() const;
 
     /// <summary>
     /// Adds reference to that asset.
@@ -213,9 +210,7 @@ protected:
     /// <summary>
     /// Releases the storage file/container handle to prevent issues when renaming or moving the asset.
     /// </summary>
-    virtual void releaseStorage()
-    {
-    }
+    virtual void releaseStorage();
 
     /// <summary>
     /// Loads asset
@@ -231,10 +226,7 @@ protected:
 
 protected:
 
-    virtual bool IsInternalType() const
-    {
-        return false;
-    }
+    virtual bool IsInternalType() const;
 
     bool onLoad(LoadAssetTask* task);
     void onLoaded();
diff --git a/Source/Engine/Content/Assets/Model.cpp b/Source/Engine/Content/Assets/Model.cpp
index dd9c484e1..d337c62a2 100644
--- a/Source/Engine/Content/Assets/Model.cpp
+++ b/Source/Engine/Content/Assets/Model.cpp
@@ -570,7 +570,7 @@ bool Model::Init(const Span<int32>& meshesCountPerLod)
     }
 
     // Dispose previous data and disable streaming (will start data uploading tasks manually)
-    stopStreaming();
+    StopStreaming();
 
     // Setup
     MaterialSlots.Resize(1);
@@ -827,7 +827,7 @@ Asset::LoadResult Model::load()
 #endif
 
     // Request resource streaming
-    startStreaming(true);
+    StartStreaming(true);
 
     return LoadResult::Ok;
 }
diff --git a/Source/Engine/Content/Assets/SkinnedModel.cpp b/Source/Engine/Content/Assets/SkinnedModel.cpp
index b98ba2e57..3860aeda8 100644
--- a/Source/Engine/Content/Assets/SkinnedModel.cpp
+++ b/Source/Engine/Content/Assets/SkinnedModel.cpp
@@ -670,7 +670,7 @@ bool SkinnedModel::Init(const Span<int32>& meshesCountPerLod)
     }
 
     // Dispose previous data and disable streaming (will start data uploading tasks manually)
-    stopStreaming();
+    StopStreaming();
 
     // Setup
     MaterialSlots.Resize(1);
@@ -973,7 +973,7 @@ Asset::LoadResult SkinnedModel::load()
     }
 
     // Request resource streaming
-    startStreaming(true);
+    StartStreaming(true);
 
     return LoadResult::Ok;
 }
diff --git a/Source/Engine/Content/Assets/Texture.cpp b/Source/Engine/Content/Assets/Texture.cpp
index 23dbff0e2..08100d4b5 100644
--- a/Source/Engine/Content/Assets/Texture.cpp
+++ b/Source/Engine/Content/Assets/Texture.cpp
@@ -17,6 +17,16 @@ Texture::Texture(const SpawnParams& params, const AssetInfo* info)
 {
 }
 
+TextureFormatType Texture::GetFormatType() const
+{
+    return _texture.GetFormatType();
+}
+
+bool Texture::IsNormalMap() const
+{
+    return _texture.GetFormatType() == TextureFormatType::NormalMap;
+}
+
 #if USE_EDITOR
 
 bool Texture::Save(const StringView& path, const InitData* customData)
diff --git a/Source/Engine/Content/Assets/Texture.h b/Source/Engine/Content/Assets/Texture.h
index afefc59d2..2b0a6c127 100644
--- a/Source/Engine/Content/Assets/Texture.h
+++ b/Source/Engine/Content/Assets/Texture.h
@@ -10,23 +10,16 @@
 API_CLASS(NoSpawn) class FLAXENGINE_API Texture : public TextureBase
 {
 DECLARE_BINARY_ASSET_HEADER(Texture, TexturesSerializedVersion);
-public:
 
     /// <summary>
     /// Gets the texture format type.
     /// </summary>
-    FORCE_INLINE TextureFormatType GetFormatType() const
-    {
-        return _texture.GetFormatType();
-    }
+    TextureFormatType GetFormatType() const;
 
     /// <summary>
     /// Returns true if texture is a normal map.
     /// </summary>
-    API_PROPERTY() FORCE_INLINE bool IsNormalMap() const
-    {
-        return GetFormatType() == TextureFormatType::NormalMap;
-    }
+    API_PROPERTY() bool IsNormalMap() const;
 
 public:
 
diff --git a/Source/Engine/Graphics/Textures/StreamingTexture.cpp b/Source/Engine/Graphics/Textures/StreamingTexture.cpp
index f4bd6c082..54063f536 100644
--- a/Source/Engine/Graphics/Textures/StreamingTexture.cpp
+++ b/Source/Engine/Graphics/Textures/StreamingTexture.cpp
@@ -117,7 +117,7 @@ bool StreamingTexture::Create(const TextureHeader& header)
 #else
 	bool isDynamic = false;
 #endif
-    startStreaming(isDynamic);
+    StartStreaming(isDynamic);
 
     return false;
 }
diff --git a/Source/Engine/Graphics/Textures/StreamingTexture.h b/Source/Engine/Graphics/Textures/StreamingTexture.h
index 3aa8fee28..2317c52db 100644
--- a/Source/Engine/Graphics/Textures/StreamingTexture.h
+++ b/Source/Engine/Graphics/Textures/StreamingTexture.h
@@ -11,6 +11,7 @@
 /// </summary>
 class FLAXENGINE_API StreamingTexture : public Object, public StreamableResource
 {
+    friend class TextureBase;
     friend class StreamTextureMipTask;
     friend class StreamTextureResizeTask;
 protected:
@@ -60,7 +61,6 @@ public:
     /// <summary>
     /// Gets total texture width (in texels)
     /// </summary>
-    /// <returns>Texture width</returns>
     FORCE_INLINE int32 TotalWidth() const
     {
         return _header.Width;
diff --git a/Source/Engine/Graphics/Textures/TextureBase.cpp b/Source/Engine/Graphics/Textures/TextureBase.cpp
index 59acc488e..d9aa392cf 100644
--- a/Source/Engine/Graphics/Textures/TextureBase.cpp
+++ b/Source/Engine/Graphics/Textures/TextureBase.cpp
@@ -97,6 +97,20 @@ uint64 TextureBase::GetTotalMemoryUsage() const
     return _texture.GetTotalMemoryUsage();
 }
 
+int32 TextureBase::GetTextureGroup() const
+{
+    return _texture._header.TextureGroup;
+}
+
+void TextureBase::SetTextureGroup(int32 textureGroup)
+{
+    if (_texture._header.TextureGroup != textureGroup)
+    {
+        _texture._header.TextureGroup = textureGroup;
+        _texture.RequestStreamingUpdate();
+    }
+}
+
 BytesContainer TextureBase::GetMipData(int32 mipIndex, int32& rowPitch, int32& slicePitch)
 {
     BytesContainer result;
@@ -114,7 +128,6 @@ BytesContainer TextureBase::GetMipData(int32 mipIndex, int32& rowPitch, int32& s
     }
     else
     {
-        // Wait for the asset header to be loaded
         if (WaitForLoaded())
             return result;
 
@@ -127,7 +140,7 @@ BytesContainer TextureBase::GetMipData(int32 mipIndex, int32& rowPitch, int32& s
         slicePitch = slicePitch1;
 
         // Ensure to have chunk loaded
-        if (LoadChunk(calculateChunkIndex(mipIndex)))
+        if (LoadChunk(CalculateChunkIndex(mipIndex)))
             return result;
     }
 
@@ -261,7 +274,7 @@ bool TextureBase::Init(void* ptr)
     return Init(initData);
 }
 
-int32 TextureBase::calculateChunkIndex(int32 mipIndex) const
+int32 TextureBase::CalculateChunkIndex(int32 mipIndex) const
 {
     // Mips are in 0-13 chunks
     return mipIndex;
@@ -287,7 +300,7 @@ Task* TextureBase::RequestMipDataAsync(int32 mipIndex)
     if (_customData)
         return nullptr;
 
-    auto chunkIndex = calculateChunkIndex(mipIndex);
+    auto chunkIndex = CalculateChunkIndex(mipIndex);
     return (Task*)_parent->RequestChunkDataAsync(chunkIndex);
 }
 
@@ -304,7 +317,7 @@ void TextureBase::GetMipData(int32 mipIndex, BytesContainer& data) const
         return;
     }
 
-    auto chunkIndex = calculateChunkIndex(mipIndex);
+    auto chunkIndex = CalculateChunkIndex(mipIndex);
     _parent->GetChunkData(chunkIndex, data);
 }
 
@@ -316,7 +329,7 @@ void TextureBase::GetMipDataWithLoading(int32 mipIndex, BytesContainer& data) co
         return;
     }
 
-    const auto chunkIndex = calculateChunkIndex(mipIndex);
+    const auto chunkIndex = CalculateChunkIndex(mipIndex);
     _parent->LoadChunk(chunkIndex);
     _parent->GetChunkData(chunkIndex, data);
 }
@@ -399,8 +412,6 @@ bool TextureBase::InitData::GenerateMip(int32 mipIndex, bool linear)
     // Allocate data
     const int32 dstMipWidth = Math::Max(1, Width >> mipIndex);
     const int32 dstMipHeight = Math::Max(1, Height >> mipIndex);
-    const int32 srcMipWidth = Math::Max(1, Width >> (mipIndex - 1));
-    const int32 srcMipHeight = Math::Max(1, Height >> (mipIndex - 1));
     const int32 pixelStride = PixelFormatExtensions::SizeInBytes(Format);
     dstMip.RowPitch = dstMipWidth * pixelStride;
     dstMip.SlicePitch = dstMip.RowPitch * dstMipHeight;
diff --git a/Source/Engine/Graphics/Textures/TextureBase.h b/Source/Engine/Graphics/Textures/TextureBase.h
index bdc551397..2bb0042df 100644
--- a/Source/Engine/Graphics/Textures/TextureBase.h
+++ b/Source/Engine/Graphics/Textures/TextureBase.h
@@ -50,9 +50,6 @@ protected:
 
     StreamingTexture _texture;
     InitData* _customData;
-
-private:
-
     BinaryAsset* _parent;
 
 public:
@@ -126,6 +123,16 @@ public:
     /// Gets the total memory usage that texture may have in use (if loaded to the maximum quality). Exact value may differ due to memory alignment and resource allocation policy.
     /// </summary>
     API_PROPERTY() uint64 GetTotalMemoryUsage() const;
+    
+    /// <summary>
+    /// Gets the index of the texture group used by this texture.
+    /// </summary>
+    API_PROPERTY() int32 GetTextureGroup() const;
+
+    /// <summary>
+    /// Sets the index of the texture group used by this texture.
+    /// </summary>
+    API_PROPERTY() void SetTextureGroup(int32 textureGroup);
 
 public:
 
@@ -155,7 +162,7 @@ public:
 
 protected:
 
-    virtual int32 calculateChunkIndex(int32 mipIndex) const;
+    virtual int32 CalculateChunkIndex(int32 mipIndex) const;
 
 private:
 
diff --git a/Source/Engine/Streaming/StreamableResource.cpp b/Source/Engine/Streaming/StreamableResource.cpp
index af758e786..685faff03 100644
--- a/Source/Engine/Streaming/StreamableResource.cpp
+++ b/Source/Engine/Streaming/StreamableResource.cpp
@@ -14,10 +14,10 @@ StreamableResource::StreamableResource(StreamingGroup* group)
 
 StreamableResource::~StreamableResource()
 {
-    stopStreaming();
+    StopStreaming();
 }
 
-void StreamableResource::startStreaming(bool isDynamic)
+void StreamableResource::StartStreaming(bool isDynamic)
 {
     _isDynamic = isDynamic;
 
@@ -28,7 +28,7 @@ void StreamableResource::startStreaming(bool isDynamic)
     }
 }
 
-void StreamableResource::stopStreaming()
+void StreamableResource::StopStreaming()
 {
     if (_isStreaming == true)
     {
diff --git a/Source/Engine/Streaming/StreamableResource.h b/Source/Engine/Streaming/StreamableResource.h
index 8b8854bfe..a27833149 100644
--- a/Source/Engine/Streaming/StreamableResource.h
+++ b/Source/Engine/Streaming/StreamableResource.h
@@ -105,7 +105,6 @@ public:
 
     struct StreamingCache
     {
-        //float MinDstSinceLastUpdate = MAX_float;
         DateTime LastUpdate = 0;
         int32 TargetResidency = 0;
         DateTime TargetResidencyChange = 0;
@@ -124,6 +123,6 @@ public:
 
 protected:
 
-    void startStreaming(bool isDynamic);
-    void stopStreaming();
+    void StartStreaming(bool isDynamic);
+    void StopStreaming();
 };
diff --git a/Source/Engine/Streaming/Streaming.cpp b/Source/Engine/Streaming/Streaming.cpp
index 1ce53cf75..a2e010105 100644
--- a/Source/Engine/Streaming/Streaming.cpp
+++ b/Source/Engine/Streaming/Streaming.cpp
@@ -59,7 +59,6 @@ void UpdateResource(StreamableResource* resource, DateTime now)
     if (resource->IsDynamic())
     {
         targetQuality = handler->CalculateTargetQuality(resource, now);
-        // TODO: here we should apply resources group master scale (based on game settings quality level and memory level)
         targetQuality = Math::Saturate(targetQuality);
     }
 
diff --git a/Source/Engine/Streaming/StreamingGroup.h b/Source/Engine/Streaming/StreamingGroup.h
index 8f7cec045..8e3a78555 100644
--- a/Source/Engine/Streaming/StreamingGroup.h
+++ b/Source/Engine/Streaming/StreamingGroup.h
@@ -14,9 +14,6 @@ class FLAXENGINE_API StreamingGroup
 {
 public:
 
-    /// <summary>
-    /// Declares the Group type
-    /// </summary>
     DECLARE_ENUM_4(Type, Custom, Textures, Models, Audio);
 
 protected:
@@ -38,7 +35,6 @@ public:
     /// <summary>
     /// Gets the group type.
     /// </summary>
-    /// <returns>Type</returns>
     FORCE_INLINE Type GetType() const
     {
         return _type;
@@ -47,7 +43,6 @@ public:
     /// <summary>
     /// Gets the group type name.
     /// </summary>
-    /// <returns>Typename</returns>
     FORCE_INLINE const Char* GetTypename() const
     {
         return ToString(_type);
@@ -56,7 +51,6 @@ public:
     /// <summary>
     /// Gets the group streaming handler used by this group.
     /// </summary>
-    /// <returns>Handler</returns>
     FORCE_INLINE IStreamingHandler* GetHandler() const
     {
         return _handler;
@@ -88,7 +82,6 @@ public:
     /// <summary>
     /// Gets textures group.
     /// </summary>
-    /// <returns>Group</returns>
     FORCE_INLINE StreamingGroup* Textures() const
     {
         return _textures;
@@ -97,7 +90,6 @@ public:
     /// <summary>
     /// Gets models group.
     /// </summary>
-    /// <returns>Group</returns>
     FORCE_INLINE StreamingGroup* Models() const
     {
         return _models;
@@ -106,7 +98,6 @@ public:
     /// <summary>
     /// Gets skinned models group.
     /// </summary>
-    /// <returns>Group</returns>
     FORCE_INLINE StreamingGroup* SkinnedModels() const
     {
         return _skinnedModels;
@@ -115,7 +106,6 @@ public:
     /// <summary>
     /// Gets audio group.
     /// </summary>
-    /// <returns>Group</returns>
     FORCE_INLINE StreamingGroup* Audio() const
     {
         return _audio;
@@ -126,7 +116,6 @@ public:
     /// <summary>
     /// Gets all the groups.
     /// </summary>
-    /// <returns>Groups.</returns>
     FORCE_INLINE const Array<StreamingGroup*>& Groups() const
     {
         return _groups;
@@ -135,7 +124,6 @@ public:
     /// <summary>
     /// Gets all the handlers.
     /// </summary>
-    /// <returns>Groups.</returns>
     FORCE_INLINE const Array<IStreamingHandler*>& Handlers() const
     {
         return _handlers;