I just tried setting catalyst ai to standard rarther than disabled and its still fine. It seems only advanced causes troubles. Its apparently a good idea to leave it on as it provides optimisations that can boost your frame rates in games.

As for an actual explanation on what it does go here.

EDIT: Fixed the problem. I found out its caused by the catalyst ai on the recent ati drivers. I disabled it and the problems went away. Hi I have the steam version of multiwinia and since possibly the last ati catalyst update I have been having these weird graphics issues. I have uploaded some image...