Fps Dropped For No Apparent Reason

Hi guys, since 2 days the fps on all of my games dropped by half, for exemple :
While i had a constant 60 fps (60hz monitor) On Max settings on Dark Souls 3 / Metal Gear Solid 5, i now have at max 30 - 35 fps on them, with no apparent reason, the heat of the GPU is fine, ( around 65 - 70 celsius degrees ), the Ram & CPU Usage are normal ( 40% for the CPU most of the time, 60 - 80% for the RAM ) and 100% GPU usage according to HW Monitor.

Note that i haven't installed any software whatsoever in the last 2 days ...

My specs are :
Windows 8.1 Pro
AMD Ryzen 5 1500x
EVGA SSC GTX 1060 6GB
Corsaire Vengeance 3200Mz 8Go Dual Channel Ram
Asrock AB350M Pro4 Motherboard (latest bios)
Seagate barracuda st1000dm010

I have tried :
- Reinstalling the drivers
- Increasing fan speed
- Disabling useless non-microsoft services and some microsoft services (Windows Installer / Update / Superfetch / Printer stuff, etc...)
- Disabling start-up services aside from 3 (scp ds3 controller service / eagleget / shareX)

Please help guys, i'm lost ...

 

Have you checked your internet speeds? http://www.speedtest.net is a good site. Not sure if your games involve internet or not. If you use AT&T they have been very slow for over a week where we are.

 

Frames per second is due to video card not internet speeds.

Some games are capped at 72 FPS.There might have been a recent patch to the game that has all so broken this FPS.

If your CPU is at 100% while playing this could be your bottle neck.Those games should not even touch that 100%.
https://www.cpubenchmark.net/cpu.php?cpu=AMD+Ryzen+5+1500X&id=3001

You might have stuff running in the back round that is sucking it all up.

 

I've checked every obvious reason ^^" that's why i'm posting here, i'm not doing anything new from the time the game was running at 60 fps, that's the main problem

 

Show us your task manager in a picture.I use snipping tool.

Show all your processes.

Like so.

 

Maybe we can figure out what is causing the bottle neck.

 

Thank's guys for the help & intentions, figured it was a bitcoin mining malware, my GPU was running at 95% even when not playing games, i've reinstalled windows and that solved it.

 

How did you reinstall it.

Did you do a fresh wipe on the hard drive.

 

Might want to run a scan just in case.

http://www.majorgeeks.com/files/details/herdprotect.html

Light malware scanner that is faster than malwarebytes.