sounds like a bad connection to me between the passthrough cable. when did you start noticing the problem? if it occurred around the time you installed d3d 8.0, then maybe you should try uninstalling it. also, i'd recommend that you use software decoding if your cpu can handle it, or unless you use the s-video out features of the decoder card. the 2d quality degradation is non-existent compared to what pass-through cables produce, especially external pass throughs. what's your hardware setup btw, os, etc...