Cant play normal

[apollo20]

Hello , so now i am playing about a week men of war assault squad and cant play normal that game. I have very low fps and sometimes unplayable. I cant even control a unit normal because the game runs too slow for me. The main problem is online , because with the missions is all ok. The more people plays online in one room the more slower the game runs and also the more time i play for exampel 30 mins same map it gets shitier. I was searching solution on internter but cant find wats wrong.

My pc specs: Amd 7970m i7-3610QM 8gm rams , i got also killer wirreles N card and my internet speed is 20 mgbs.Using windows home 7 64bit.

I am geting about 20 fps and sometims even worse . The other games like crysis2 i am playing on ultra settings withuot any problems.
Also i have tried lower settings and lower resolution no help at all.