sound causing lag?

Hi. Im getting some really bad fps drops and stuttering while playing multiplayer. No matter what map, gametype or number of players. Ive noticed something strange. The biggest fps drops i get while some close sounds need to be played like someone shoots me or something exploding near me etc... Then i get a split second freezes. It happens on ultra, high, normal and low only its a minimally better on lower settings...

It seems like theres problem when game needs to load some sound from hdd. 

I can get about 75fps average on ultra(only textures set to high aax0) but these lag spikes make it unplayable for me.

Fx 8320@4.3. 8gb ram. 2x hd7850 1gb. Win7 64bit pro. 13.11 v8. Creative sound blaster Fatality x-fi with latest drivers