I've tried installing Photoshop CS6 several times, installing different video drivers, deleting Photoshop's preferences, and a few other things with no success.
The problem is that the canvas looks really choppy when I move it around with the hand tool, and there's definitely screen tearing when I zoom in and out by holding the "z" key.
In CS5, in the performance section, when I click on "advanced settings" I get a vertical sync checkbox and another about anti-aliasing paths. In CS6 I don't get these checkboxes at all. Instead, it's something about "cuda" and other not very useful options. I've even tried turning on v-sync manually in the nvidia control panel just for photoshop with no success.
For the moment, I'm using CS5 because it works correctly for me. Has anyone else has this problem with CS6?