Need help for a unknown issue

[Law]

So for about a week or two now i seem to have a issue where when im in any game lets say csgo atm i will get into a game and have 50-40 fps and then if i alt tab out and come back a few times it will fix itself any idea on why this happens so far it happened on csgo, LoL, fallout 4, and rainbow six i have cleaned my gpu out (GTX 660) and done a fresh install of the new drivers custom and reset my nvidia settings to fix it but nothing? my card is not over heating and no signs of the card dying cause i never experienced artifacting. I honestly have no idea what it could be somebody said something about Stereoscopic 3D but i have no idea what that is i also did a custom install of the drivers and choose not to download any of the 3D drivers do to the fact i don't use them.

specs 

AMD FX-8320 @3.5

GTX 660 2gb

8gb ram

1TB hdd

Edited April 15, 2016 by Law

[Moonzy]

try uninstalling the gpu driver using ddu and install an older driver like 361.xx or 362.xx

[Law]

2 minutes ago, Moonzy said:

try uninstalling the gpu driver using ddu and install an older driver like 361.xx or 362.xx

What is ddu and i think i tried something like that but it told me i could not cause of my os but it said windows 10 and that is what i have.

[Moonzy]

2 minutes ago, Law said:

What is ddu and i think i tried something like that but it told me i could not cause of my os but it said windows 10 and that is what i have.

display driver uninstaller

[Law]

can't i just uninstall the driver from programs and features?

[Law]

11 minutes ago, Moonzy said:

display driver uninstaller

well here i am no driver and i just tried to download another and it won't let me..

 

[Moonzy]

2 minutes ago, Law said:

well here i am no driver and i just tried to download another and it won't let me..

http://www.nvidia.com/download/driverResults.aspx/98558/en-us

try downloading this, uninstall your current driver and install this

[Law]

THANK YOU THIS FIXED IT!!!! <333333