Do you have DX11 enabled? Run in DX9 or 10 until DX11 gets worked out.
DX9...i can run it at 60fps indoors and it feels great, but i'm trying to lock it at 50fps or so to keep the game consistent; however, anything below 60 really stutters when i pan the camera. More than it should. i was just playing Gears 3 on 360 and panning the camera felt smooth at 30fps. Panning the camera in Batman on PC at 50fps is choppy... i don't get it.