I have been having problems with playing these compressed video files for a while, mainly, stuttering playback or loss of audio/video sync.

In WinXP & MP i could get the codec configuration reasonbly sorted so that the problems rarely occured, but in 7MC i cannot get it to play ball. All the files that i have a SD, no HD or AC3, etc and the ages ranges from 6 mths - several years (i.e. various incarnation of compression codecs).

Given that the machine i am running this one is low spec my conclusion was that the most likely cause was due to minimal RAM or lack of processor grunt. Especially now i am running Win7 with (assumed) larger overheads.

So the question is, does the processor (after a certain level) affect to playback performance of a compressed video or is the codec configuration the most important aspect to focus on?