optimized performance

src/Shared/HandyControl_Shared/Data/GlowWindow/GlowBitmap.cs

@@ -85,6 +85,7 @@ namespace HandyControl.Data
                 var array = new byte[BytesPerPixelBgra32 * bitmapImage.PixelWidth * bitmapImage.PixelHeight];
                 var stride = BytesPerPixelBgra32 * bitmapImage.PixelWidth;
                 bitmapImage.CopyPixels(array, stride, 0);
+                bitmapImage.Freeze();
 
                 _transparencyMasks[(int)bitmapPart] =
                     new CachedBitmapInfo(

src/Shared/HandyControl_Shared/Data/HandyControlConfig.cs

@@ -5,5 +5,7 @@
         public SystemVersionInfo SystemVersionInfo { get; set; }
 
         public string Lang { get; set; }
+
+        public int TimelineFrameRate { get; set; } = 60;
     }
 }