I installed AC3 filter on the HTPC as some of the movies would not play any sound, that fixed that issue.
I thought I would try installing powerdvd, haali splitter and ac3 filter on my main PC (spec in sig) as sometimes I get the odd stutter in 1080p files. However a lot of the movies wont play. I installed everything exactly the same as with the HTPC (hardware acc is enabled in powerDVD too). The movies that wont play ball (which so far is about 75% of the ones I have tried, and work on the HTPC), will do nothing when I lauch them in powerDVD, if I skip in to the movie, it will show 1 frame, then stop and the sound will continue.
Any suggestions or thoughts on this? Perhaps I should create a thread in the home cinema section.
Installed coreAVC on my main PC to take advantage of CUDA acceleration (8800GT 512mb), and am now using Media Player Classic without any problems yet. On the HTPC front, I just installed Media Player Classic and thats working well too, not bothered with coreAVC.