Ya, 1080i/p is working perfectly as long as I remember to switch the cable box before turning to a channel. If I leave it on 480i/p and then switch the box, I get a horrible stutter, but a changing of the channel up / down, and it totally fixes the problem. I've connected to the graph and verified that it is using the PDVD8 codec I mentioned, so it's totally what is working in my situation. It's worth a try of installing PDVD8 and selecting the codec. I actually spent the better part of an afternoon selecting (from the top) every single codec and checking the HD-PVR's performance and it was the only one I didn't have weird shrinking screen issues (4:3 letterbox kept on getting smaller every time I changed to a channel that was 4:3 letterbox), or stutter, or audio sync. My biggest problem with all this is, why do the codecs that work well, change everytime Mediaportal comes out with another version?? In the builds by garry / WileE, I used Arcsoft all the way and it worked great, now I've had to totally switch up my codecs multiple times just to find out what works. I mean, I know they changed how the HD-PVR is detected, and that's better and all, but why did that change how the codecs are used? Is anything better in 1.0.2? What are your PMT times?