Game is out of Beta today. I have the same issue and also have to disable crossfire or I get wicked white blocky flashing artifacts.
I started a thread
here describing in more detail these issues, however with no progress.
I'm really dying to get all this hardware working because game lag can be huge if your not careful what server your on (high ping noobs), and any performance lag seriously detriments your game combat horribly.
I was hoping this would be on Flawless Widescreen.
How the hell can I donate to this site too?