This game is annoying me, I want to like it because it's super fun, but the camera movement is super sluggish despite my framerate being between 40-60 at all times. It's like I'm dragging my mouse through treacle.
Is there some kind of mouse smoothing going on?
You turned vsync off? I always find vsnyc on makes my mouse go like that.
Super smooth and responsive. Be sure to turn of Bokeh filter, gpu water and SSAO that are CUDA features. Everything else is on max.

. Landed my 474 at some other airport (so cool!), just as some Harrier looking thing took of right in front of me, so parked up next to a hanger and stole some awesome lookin' fighter thingy!
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I'm running a crappy E6600 @ 2.7 with an ATI 4890, and 4GB ram and getting 40-50 fps 4xAA 16xAF 1680x1050. Glad my CPU isnt bottlenecking it too much.