Horrible FPS

Hi, i recently reformatted my computer and i seem to not be able to run dolphin as well as before. I was running everything at least 30fps+ and 100% speed, but now, im dipping if anything happens. In any game that has anything with an explosion or some kind of effect my fps goes down to 2 and sometimes even crashes the game. I dont know if i installed something wrong, or what, but i really cant play games like metroid or xenoblade with this kind of stuff going on every time i shoot or use a move. Any help would be greatly appreciated.

Im running a i5-2500 3.3ghz
Radeon hd 7850