afko: you forget some point. Thats that Blitz apps try to get 100% cpu so there is not that much left for video decompression, no mather if 1ghz or 10ghz. So unless you have a multicore system (which you obviously do not have), another try might be the addition of delay(1) to give some CPU time to the decoder. If your app runs on time difference base, this shouldn't make a difference to the rest of the code.
(hope with optimized you don't mean h.264 because this would be a different thing. your card has no hardware decoder for this compression (only 7600GT, 7800GT and 7900GT as well as the Go of those 3 have it) and thus it would take more than only 1 ms delays to get it going at realtime)
(hope with optimized you don't mean h.264 because this would be a different thing. your card has no hardware decoder for this compression (only 7600GT, 7800GT and 7900GT as well as the Go of those 3 have it) and thus it would take more than only 1 ms delays to get it going at realtime)