FPS drops in every single game.

Once the bigger update came in May ( can't remember date ), i have experienced fps drops in every single game and i have spent so many hours trying to fix them. Ill list things i have tried below.
For example in CS:GO i have usually around 250 FPS then it drops to 10-40 FPS. These happen 1-3 times in a minute. In Quake Champions from 110 fps to 10-40 fps aswell and as often as in CS:GO. This is making games literally unplayable.


OS: Windows 10
Version: 1083 17134.137

SPECS
Motherboard: ASRock 990FX Extreme 3
CPU: AMD FX-8350
GPU: NVIDIA GeForce GTX 1060 6GB
RAM: 8GB
PSU: Corsair CX500 v2 80

Things i have tried

-Updating NVIDIA drivers
-Changing settings in NVIDIA control panel ( Vsync, battery usage, PhysX)
-Reinstalling games
-Disabling DVR from settings and from regedit ( both in current_user and local_machine )
-I loaned more ram from my brother's, totaling 16GB RAM and still no improvement
-Chaning ingame settings
-Cleaning caches
-Updating any other driver i found in my Computer
-Killing useless tasks from background
-Closing everything when i play
-Cleaning Computer physically

This has happened for over a month now, and im tired of trying to search for an answer. I would really appriceate any help.

Edit: Added PSU.

Puteli said:

Things i have tried

-I loaned more ram from my brother's, totaling 16GB RAM and still no improvement

RAM should never be mismatched, even if it's from the same brand, as it can cause issues; anything from performance degradations to BSOD and system crashes. If you want to add more RAM you need to buy them in pairs or find the exact id and model.

Puteli said:

-Updating NVIDIA drivers

Try to completely clean out the drivers using DDU Official Display Driver Uninstaller DDU Download
How to: Use Display Driver Uninstaller on Windows 10

Puteli said:

-Cleaning caches

What do you mean?

Puteli said:

-Updating any other driver i found in my Computer

This is a good way to screw up the computer. Drivers should not be updated willy-nilly without knowing what they actually update. Best way is to use the drivers from your mb manufacturer and take it from there.

Faith said:

RAM should never be mismatched, even if it's from the same brand, as it can cause issues; anything from performance degradations to BSOD and system crashes. If you want to add more RAM you need to buy them in pairs or find the exact id and model.

All 4 4GB RAM were the same.

Faith said:

Try to completely clean out the drivers using DDU Official Display Driver Uninstaller DDU Download
How to: Use Display Driver Uninstaller on Windows 10
.

Ill try this.

Faith said:

What do you mean?
.

Oops. This is something what i tried with Chrome problem.

Faith said:

This is a good way to screw up the computer. Drivers should not be updated willy-nilly without knowing what they actually update. Best way is to use the drivers from your mb manufacturer and take it from there.

Not many updates tho, but it can't be the problem also.