Poor performance from a high-end build?

[Clonolyxn]

Build:

MOBO: z77 fatal1ty performance

GPU: GeForce GTX 670

CPU: i5-3570k @ 3.4ghz

RAM: 8GB DDR3 Corsair Vengeance

PSU: TX-Series 750W Corsair

OS: Windows 7 64-bit Home Edition


With my specs, I can't even run the game on High (Desktop) with a stable 60 frames. It's very unstable in cities which is somewhat expected, but even outside the city questing I get this same problem. I use Unigine to benchmark my GPU considering the Extreme HD feature on it pushes your GPU to its limits. Having FPS between 35-40 means you can generally run any modern game at 60+ FPS.

Unigine Extreme HD Benchmark:

FPS:
40.5
Score:
1695
Min FPS:
22.0
Max FPS:
76.6

My computer can run other games perfectly fine such as Saints Row 3 and Skyrim on Ultra. I understand MMOs can not necessarily be compared with non-MMO games in terms of performance, but this game is decently optimized from what I've been told.

I have the latest beta drivers for my GPU and I have even freshly installed Windows 7 trying to find some sort of problem that I could fix.

My temperatures are fine when running as well. My CPU stays at about 40C and my GPU runs at about 50C.

that not high end build yet. for pure performance use windows 64bit ultimate version. hardware cant full perform with home basic. gtx 670 what model? im only use gtx 260 old model can perform maximum graphic without lagging. amd core is better to accelerate and maintain FPS. but importance is your GC spec. if only 1-2gb ddr5 128 bit still can get full perform. try to get above 256bit for your gc. my gc just need a bit tweak OC with crosshair formula V with AMD black Edition Core. FPS maintain in 60 - 90....