I'm using Vegas Studio 6 Platinum for editing HD video. The playback in preview has much much lower frame rate than what Windows Media Player can do with the same video stream. What gives? The playback of HD video on the hard drive dowloaded from camera is smooth in Windows Media Player 9, probably due to hardware MPEG2 decoding provided by the video card (just normal desktop video card, not special MPEG encoder/decoder card). Any chance that I can get Vegas to make use of the basic decoding function available in the normal mpeg-2 capable video card? (a lowly Radeon X200, BTW). I'm a bit nonplused looking at 100% CPU load with jumpy frames in Vegas preview but smooth playback with 60% CPU load in WMP, a piece of free software.