Well...I haven't had any real troubles with htpc stuff in a few years. Recently though it's been really weird. I'm using latest drivers for specs to the left for my htpc which is being output to a Sony KDF-46E2000 (46" rear projo LCD) via DVI -> HDMI. I'm using k-lite (ffdshow and haali most of the time) and CoreAVC. I've never had this problem in the past but recently when I output anything to my TV it has a constant stutter. When I playback on my monitor it plays just peachy. Is this something with the resolution? I have the same problem with my 2600XT and a 2600 mobility in my laptop. They playback just fine on the computer screen, but when output to a tv it's terrible. And as I mentioned...I didn't used to do this. For reference, I run at 1360 x 768 (can go as high as 1920 x 1080) on the TV and 1680 x 1050 on my monitor.