PC Specs, what framerates should I expect?

What I'm running:

E8400 3.0GHZ Intel Dual Core
8gb 1333mhz RAM
NVidia GeForce GTX560ti

Frame rate 49-50fps stable

is this around what I should get? or is something wrong? I'm running other games alot faster it seems...

sounds about right, 2K12 isn't a great console port

Aside from being a poor port, the game seems to be too reliant on the processor. It's running a lot of things it should be running on the GPU on the CPU from what I can tell. My GPUs get tons of idle cycles with 2K, CPU doesn't get any rest.

thats pretty much what I was figuring.

You should be getting stable 60fps with vsync on this rig. Maybe you put antialiasing too high. Along 1600*900 or higher res you dont need more than 4x AA.

I run it at 1366x768 with cpu limited to 1.6ghz (quad core) and its always 60fps in gameplay. Only cutscenes sometimes run slower. And thats on laptop.