Enumia

I get 60-80 fps outside cities and 40-50 fps inside cities with my MSI GTX 660 Ti PE. I also got the I5 3570k, but overclocked it to 4.8GHz. I don't notice any difference if I leave it at stock 3.4 - 3.8GHz. Try to set HDR quality to normal (huge performance increase for me), anti aliasing to normal (higher than this just decreases my fps and doesn't really look better) and postprocess effect disabled (high will make it harder for you to see people, and increases formance). All other settings can be set on very high!

Cheers dash! Worked! :D

Same problem here.