Maybe you have a renderer/codec selected that requires a lot of power. Use either the Overlay Mixer or VMR7 (windowed). I use VMR7 (windowed) on my machine (which is kinda close in terms of power) and I get no problems at all. Oh and if you use ffdshow, make sure you have too many filters (like postprocessing) enabled as that can slow things down as well. I hope that helps.DarkAurora said: