Question / Help Huge performance hit with NVENC recording

Hello, i have weird problem i have almost same pc as my friend: gtx 770 and i5 3570 8gm ram he has same gpu with i5 4670k and 16 gb ram we also have exactly same obs setting and same CS:GO in game settings and he can recording without any problems, he said that he don't even feel that he is recording like i said its so weird because for me game is unplayable huge fps drop from 130-220 to 90-100 with same specs, same settings same "everything" the funniest thing is that csgo is cpu based so there shouldnt be any performance hit with NVENC right? maybe like 5%.
I tried to format my pc today and "tweak" pc for gaming (uninstall dvr...etc) but unfortunately that didnt fixed the problem
Maybe there is something wrong with my hardware? both cpu and gpu usage peaks to ~80% i feel like i tried everything :( any idea how to fix it ? Thx for answer and sorry for bad english :)
 

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