I have a issue in programming for the graphics Card. I write a shader for Image processing (I use DirectX 11 in combination with SharpDX), but the Transfer from the CPU to the GPU is really slow (sometime about 0.5 seconds), but I think there should be a faster way than using Texture2D.FromStream, because when playing a video, also every image of the Video has to be transfered to the GPU (or am I wrong at this Point?). How can I Speed up this process?