Shibbyland

Hi All, Could you please give me some guidance on FPS? I am running an i5 3470 processor, Nvidia GTX 660, 16 GB RAM. I noticed my graphics settings defaulted to ULTRA. Is this normal regardless of specifications? I have also noticed regardless whether I set graphics to ULTRA or HIGH, the game remains at 30 FPS. It seems playable (the odd slow down but generally ok) but on exiting the game on ultra I am notified that the colour scheme may need to be changed. If I set graphics to standard or low I get 60 FPS but I would not enjoy the game on these settings. What are other people's experiences? How does my PC stack up? Is the seeming to be stuck on 30 FPS normal? Regards Shibby