my card does the same thing. I also get pixelated screens and neon (pink/green) colors on the screen. I alt tab it and it gets a little better but does not completely go away.
My BF3 used to crash after 5-10 minutes of play by alt+tabbing to the desktop screen and there was no way I could get back into the game. This started when I d/l the most recent bf3 patch 2 weeks ago and I couldnt figure out why as when I first installed it in Nov it worked perfectly.
I am now able to play for about an hour before the pixelation/colors occur. What I did was I uninstalled the Nvidia 3D Vision stuff in the control panel as well as that Nvidia Stereoscopic thing.
OS Name Microsoft Windows 7 Professional
System Type x64-based PC
Processor AMD Phenom(tm) II X4 965 Processor, 3400 Mhz, 4 Core(s), 4 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. 0901, 11/24/2011
SMBIOS Version 2.7
Installed Physical Memory (RAM) 12.0 GB
Total Physical Memory 12.0 GB
EVGA GTX550 ti