Laggy,Stutter,Skiping video?

Hello, I have no issues running video from my PC,Xbox ect… but when I use ATV/ BOXEE the video is slow choppy and studders? is there a fix to this?

What type of files are you attempting to play?

It really depends upon the quality of the video. ATV cannot display true 720p or 1080p video, the processor is too slow. I just solved this problem (720p) by installing a Broadcom Crystal HD card and running XBMC.

I am attempting to play online videos, FOX Comedy Central and HULU nothing plays correctly I get a Stutter or Skipping video ?