Hey I've been playing the server for a while now and have been having a great time.

However I have just progressed to Zangermarsh and have been really having a lot of issues with either screen tearing or flashing textures, it doesn't really effect my game play but its incredibly distracting and wondered if anyone had any advice on how to improve this as it seems to be increasingly happening throughout my game.

I'm playing WoTLK on a 27inch iMac