Low FPS with overclocked 570 and 2500k at 4.6ghz

I get an average of 30 fps with everything on high, occasionally hitting 50 away from the battle and sometimes dropping as low as 18 during the battle. I tried both High settings and Low settings and got almost no change to my FPS. On top of this while playing with my friend through Hamatchi in a 2v2, having set the funds to low and units sizes to medium, as well as lowering the graphics to medium I got between 10 and 25 FPS. I have a 570 overclocked to 850mhz, a 2500k overclocked to 4.6ghz, and 8gb of RAM. Can somebody please help me understand why my FPS is so unvelievably low? It is barely playable in single player and completely unplayable in multiplayer.

If it is relevant I am running Darthmod Napoleon 2.5.

Since you have to be logged into Steam to play Napoleon this way, it makes Hamachi illegal along with your copies of the game

Since such discussion is against the Terms of Service, Closed.