I took advantage of Dead Space but found it too difficult to play - the cursor movement was "jagged" and nothing I changed in settings made it feel comfortable. I don't have the best game rig, not even a good one, but I play Left for Dead 2 absolutely fine, so I guess its a bug or something.
Awesome that Battlefield 3 is available. Heads up, its 20GB so will probably have to leave it overnight.
I realize that this is a few days late but to fix that you just have to turn off vsync in game and then turn it on through your graphics drivers software.