ArmA2 / OA (low) performance issues

[ArmA2 / OA (low) performance issues]

Hello guys

I have i7 3770k and struggle to get above 40fps on wasteland 50fps dayz

Is there anything i can do to increase this?

My full specs are

I7 3770k

Asus formula maximus v

2 x 660s gainward glh edition

32gbs 1333 mhz ram

Windows 8

240gbs ssd

3 tb hdd

Even with settings on normal or high still get low fps and have eddited files for draw distance etc

And followed some guides for optimising to no avail

Pls help :(