Ram will not help to much with FPS. FPS also depend on the graphics settings you have the game running on. I am sure that those people getting 30-40 fps are not running at 1024x768 resolution and everything set to make. Just try lowering your graphics settings down or lower the resolution if you have it set high.
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=[SE]= Sgt. WillyWonka
2nd Platoon, 3rd Squad Leader