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I'm trying to understand why my images are not snappy, so I built a sample to test WPF performance. I used a timer to calculate how long my "display images" event handler executed, and used a stop watch to measure how long it took the images to appear on the screen. The bottom line: when displaying 100, 1600, 2500 and 3600 images, WPF took 2, 9, 12 and 16 seconds after my code had finished to display the images on the screen. So I feel helpless: It seems I can't improve my code to make the images appear faster - I need to do something with WPF! So my question is: What do I need to do differently to make the images display faster? The test setup is simple: The window contains a Grid. After the "test" button is clicked, row and column definitions are added.Then an Image is added to each cell of the grid as follows: var image = new Image(); image.BeginInit(); image.Name = ImageNameFromCell(theRow, theColumn); image.Stretch = Stretch.None; image.HorizontalAlignment = HorizontalAlignment.Center; image.VerticalAlignment = VerticalAlignment.Center; RenderOptions.SetBitmapScalingMode(image, BitmapScalingMode.LowQuality); image.EndInit(); theGrid.Children.Add(image); Finally, the Source of each image is set to a bitmap:a gray-scale image already scaled down to the estimated screen size. The bitmap is generated as follows: var smallerBitmapImage = new BitmapImage(); smallerBitmapImage.BeginInit(); smallerBitmapImage.DecodePixelWidth = (int)(theImageWidth); smallerBitmapImage.UriSource = theUri; smallerBitmapImage.CacheOption = BitmapCacheOption.None; smallerBitmapImage.EndInit(); //BitmapFrame bitmapFrame = BitmapFrame.Create(this.FullPath); var convertedBi

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