Hi, I am having some problems with playing large video files. (>1GB). After some time sound starts to stutter and interaction is disturbed (bad timing delays). I tried to use smaller video resolutions, less frames per seconds, larger latency, lower samplerate, and so on. I can not tell, why for several seconds it is ok, but then problems appear. Maybe always when GEM reads a new part of the video data to the memory of the grafic card? I have a ATI mobility Radeon grafic card with 16MB of memory and the cpu is a P4 with 2 GHz, WinXP. What should I try next? Is there any other object besides pix_film/pix_movie? What exactly causes the performance problem? thanks in advance, marius.