I have an htpc (asrock ion 3d).
Running win7 pro (official ;-)) with all latest updates. Avast anti virus. Nothing much installed on this pc as it's mostly for xbmc.
I have xbmc running and it works great. Playing a Full HD (1080p + DTS HD) video through the network is flawless!
But when I want to play some youtube video (not even hd) it's all slow. The picture freezes and the sound gets all sluggish. It's not during the whole video but from time to time. Youtube is not constantly buffering so it's not the problem.
However, playing a video from windows explorer with VLC does not work great, it has the same problem as described before. But there it seems to be a network buffering problem. Even though my (gigabit) network throughput is a little bit over 35MB/s!
Thanks for any help Michel