Newer cards, newer drivers, I'm not happy with with drivers Nvidia has pushed out in the last couple of months, but In time I figure they will get better. Another thing to consider is your overall system, that game is also fairly
CPU intensive and disk dependent. Need more info about your rig.
1. What Res & refreash rate are you running
2. SLI is an option?
3. Cooling is important
4. I can't read your rigs spec via ESP little bit more info
5. Bench your system, make some
OS tweaks, 3rd party drivers, defrag, what ever you can get that extra frame per second with some clean up.