Off topic, DAMN that is a nice setup you got there. Absolutely beautiful. Personally I bought a 200 dollar case that is way too large for my setup in case I can, maybe, just one day, turn it into a dream machine
But the game really is poorly optimized right now. I'm running a 3570k with a 660ti, 8gb ram, and I get pretty much the exact same FPS as you are reporting. It's annoying, I know, when I get in the 40s my aim becomes absolutely awful. But the best thing you can do is wait for them to optimize some more. Hopefully they can bring my fps up a bit too xD if I could stay consistently above 60 in big battles, it would be a miracle.