I used CCleaner , Game Boost doesn't helped, my games settings are 800X400 and everything is on low - medium.
I has over 50~60fps always depending on wich map sometimes even 80+, Sometimes it's drops cus of the freeze's.
I dont has many programs on the comp , i made a new windows few month's ago, all i has is this programs.
ccleaner ,game booster ,iphone programs , nvidia panel , VLC , Tortise SVN , Chrome ofc , frame work , microsoft visual , team viewer , mouse driver's , torrent , and steam . that's all.