AMD/ATI 780G HD3200 and HD playback

[BigMoose]

I'm wondering if anyone else here has the above motherboard with built in HD3200 graphics and has any issues with H.264 HD channels? I'm struggling to get stutter free playback on the BBC and ITV HD channels (DVB-S) using one of these with a 45w dual core 2.5Ghz AMD CPU. It's running on Vista Ultimate in 720p using EVR on GBPVR 1.2.13 - did the same on 1.2.9. HD will play back fine for a few mins, then stutter sometimes for a few seconds only, sometimes until I get annoyed. Changing the channel over and back often solves the problem for another few mins as can restarting PVRX2 - but equally sometimes it makes no difference. SD channels play fine - the news tickers are silky smooth at 720p. I've never got 1080i25 to work well (awful deinterlacing on the new tickers and worse HD stutter) and 1080p60 is even worse. 1080p50 is never offered and I've never sussed out how to get it to happen.

I installed the latest ATI 8.6 driver yesterday which made the interlacing on HD much worse. I've previously had perfect BBC HD playback using an inferier system (celeron 2.5Ghz, APG HD2600XT) but that was with 7.12 ATI drivers so maybe I should try them... I'm using the Cyberlink decoder, I've tried the version I got with the LG Blu-ray drive and the full retail 7.3 version and get the same results with both.

Just wondering if anyone has a similar setup and what combination of ATI drivers and video codec work best with HD playback. If you have any advice for 1080i or p50 I'd also be grateful!!

[Elmo Putney]

I've been watching this thread with interest:
http://forums.nextpvr.com/showthread.php?t=34802

[BigMoose]

Thanks for that link - it is probably a better place for me to have my rant! Cheers.