diff --git a/AxibugEmuOnline.Client/Assets/AlienUICore b/AxibugEmuOnline.Client/Assets/AlienUICore
index 8b0f0be..1acd834 160000
--- a/AxibugEmuOnline.Client/Assets/AlienUICore
+++ b/AxibugEmuOnline.Client/Assets/AlienUICore
@@ -1 +1 @@
-Subproject commit 8b0f0be28a7697597e9d416fa90a8ba62182bfa4
+Subproject commit 1acd8341ce457e66d172834dfb909569db309c33
diff --git a/AxibugEmuOnline.Client/Assets/Script/NesEmulator/VirtuaNesDraw.shader b/AxibugEmuOnline.Client/Assets/Script/NesEmulator/VirtuaNesDraw.shader
index 63fad39..1bd6ce8 100644
--- a/AxibugEmuOnline.Client/Assets/Script/NesEmulator/VirtuaNesDraw.shader
+++ b/AxibugEmuOnline.Client/Assets/Script/NesEmulator/VirtuaNesDraw.shader
@@ -107,6 +107,8 @@
 
                 mapUV.x = lerp(start,end, mapUV.x);
 
+
+
                 half4 color = tex2D(_MainTex,mapUV);
                 
                 float rawIndex = color.b;
diff --git a/AxibugEmuOnline.Client/Assets/VirtualNes.Core/CoreLibs/MemoryUtility.cs b/AxibugEmuOnline.Client/Assets/VirtualNes.Core/CoreLibs/MemoryUtility.cs
index f8bd081..21e2b95 100644
--- a/AxibugEmuOnline.Client/Assets/VirtualNes.Core/CoreLibs/MemoryUtility.cs
+++ b/AxibugEmuOnline.Client/Assets/VirtualNes.Core/CoreLibs/MemoryUtility.cs
@@ -1,5 +1,7 @@
 using System;
 using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using Unity.Collections.LowLevel.Unsafe;
 
 namespace VirtualNes.Core
 {
@@ -19,27 +21,25 @@ namespace VirtualNes.Core
             memset(array, 0, value, length);
         }
 
-        public static void memset(uint[] array, uint value, int length)
+        public unsafe static void memset(byte[] array, int offset, byte value, int length)
         {
-            for (int i = 0; i < length; i++)
+            fixed (byte* ptr = array)
             {
-                array[i] = value;
+                var offsetptr = ptr + offset;
+
+                Unsafe.InitBlock(offsetptr, value, (uint)length);
             }
         }
 
-        public static void memset(byte[] array, int offset, byte value, int length)
+        public unsafe static void memset(uint[] array, int offset, byte value, int length)
         {
-            for (int i = offset; i < length; i++)
+            fixed (uint* ptr = array)
             {
-                array[i] = value;
-            }
-        }
-
-        public static void memset(uint[] array, int offset, uint value, int length)
-        {
-            for (int i = offset; i < length; i++)
-            {
-                array[i] = value;
+                var offsetptr = ptr + offset;
+                for (int i = 0; i < length; i++)
+                {
+                    offsetptr[i] = value;
+                }
             }
         }
     }
diff --git a/AxibugEmuOnline.Client/Assets/VirtualNes.Core/PPU.cs b/AxibugEmuOnline.Client/Assets/VirtualNes.Core/PPU.cs
index a33b44e..a7f158d 100644
--- a/AxibugEmuOnline.Client/Assets/VirtualNes.Core/PPU.cs
+++ b/AxibugEmuOnline.Client/Assets/VirtualNes.Core/PPU.cs
@@ -360,7 +360,7 @@ namespace VirtualNes.Core
             loopy_shift = 0;
 
             if (lpScreen != null)
-                MemoryUtility.memset(lpScreen, 0x3F, SCREEN_WIDTH * SCREEN_HEIGHT);
+                MemoryUtility.memset(lpScreen, 0, 0x3F, SCREEN_WIDTH * SCREEN_HEIGHT);
             if (lpColormode != null)
                 MemoryUtility.memset(lpColormode, 0, SCREEN_HEIGHT);
         }
@@ -376,7 +376,7 @@ namespace VirtualNes.Core
 
             if (lpScreen != null)
             {
-                MemoryUtility.memset(lpScreen, 0x3F, SCREEN_WIDTH);
+                MemoryUtility.memset(lpScreen, 0, 0x3F, SCREEN_WIDTH);
             }
             if (lpColormode != null)
             {
diff --git a/AxibugEmuOnline.Client/Assets/VirtualNes.Core/VirtualNes.Core.asmdef b/AxibugEmuOnline.Client/Assets/VirtualNes.Core/VirtualNes.Core.asmdef
index 49a4484..b4819ec 100644
--- a/AxibugEmuOnline.Client/Assets/VirtualNes.Core/VirtualNes.Core.asmdef
+++ b/AxibugEmuOnline.Client/Assets/VirtualNes.Core/VirtualNes.Core.asmdef
@@ -4,7 +4,7 @@
     "references": [],
     "includePlatforms": [],
     "excludePlatforms": [],
-    "allowUnsafeCode": false,
+    "allowUnsafeCode": true,
     "overrideReferences": false,
     "precompiledReferences": [],
     "autoReferenced": false,