an 9800GT Pci-E 2.0 @ 16x is not capable of output 60fps video at 1920x1200 screen?
wen using BOB on interlaced material, the playback is jerky. but if not viewing in fullscreen (resizing the window to 75% of display) the playback is smooth.
this happens with madVR and haali renderer... only crappy overlay can play full-hd video at 60fps...