For some inexplicable reason, I'm now getting screen tearing across the middle of my screen when playing Diablo 3. It's almost like I have VSYNC off, except that it stays in the same horizontal line constantly - it might move slightly up and down the screen, but it's always right across my character. I've used FRAPS to confirm that VSYNC is working, I get a constant 60 frames per second that doesn't fluctuate.
I've tried turning VSYNC on/off and played with the max frames per second option (even though it shouldn't really affect this). I'm using a GeForce GTX 570 with latest drivers (296.10) and I didn't have this issue until today. Rather baffled at the moment, was just wondering if anyone else has seen this?