How to improve performance?

[VirusXXL]

Hi,

I just bought the game and somehow my laptop cannot run it very good. I have to put everything on low, turn shadows off and change the resolution to 1280 X 720 to get nearly 25 FPS.
I can play games like Diablo 3, Battlefield 3, Civ 5, XCOM and other games without problems.
My computer has:
Intel Core i7-2670QM CPU @ 2.20GHz with boost to 2.8 GHz
8 GB Ram
Nvidia GeForce GT 555M with 3GB ram

Is there anything I can do? Maybe some hidden options?
Would really love to play this game.

Hope someone can help me

Cheers