Same problem here. As people advised in other similar threads i reinstalled the game 3 times, tried running it in borderless mode, fiddled with drivers etc. etc. All to no avail. Im giving up. There is not going to be a patch soon im afraid as they have other problems with the server load. Coming back in a few weeks/months i think.

Oh, running AMD RADEON 6800 in Crossfire mode btw.