Fix that works for the new 21inch 27 inch Imacs Choppy Video Issue. ******
I found the fix on the World of Warcraft forums. The problem is with Air Port. Disable Air Port and plug your computer directly into your Router. My games and video run great. I'm getting 60fps in World of Warcraft and all the flash videos work great. Its the best solution until they fix the issue.
It sure did work... Hard wired to AirPort extreme, turned AirPort off and connected through Ethernet in network system preferences. Able to play videos from YouTube Hulu everywhere....Where is our update??
i agree it also worked for me, this was my 2nd mac returned the other and the new had same problem, just turned of airport and im good money. thanx scrudd