Games keep crashing or run badly

[Rune Jensen]

Older games keep crashing or runs like crap.

So I got this new pretty good system:
Windows 10 64 bit
1080 GTX Strix - 8GB
i7700K - 4,2 GHz
16gb ddr4
600W gold certified PSU

The system is not build by me, but by a very trust worthy company.

But when I try to play chivalry, Farcry 3 and war of the overworld i got horrible results!
In chivalry I have a hard time pushing 20FBS no matter if I do 2K or 1080p, and FarCry3 and War of the Overwolrd keeps crashing on me.

I've no problem with a bit more modern titel like Wither 3, Fortnigt and so on...
Only the older games keep crashing and freezes. This happens even if I run everything as an admin + sets my GPU software (CPU TWEAK 2 by Republic of gamers) to "turn off windows services and processes.

What must I do to fix this?

 

[apoorvkarmalkar8111995]

Uninstall any nvidia drivers then download and install again from their website. If the issue still persists, then go to any local shop and get your system checked.

 

[Rune Jensen]

I tried to reinstall the Nvedia drivers - it gave me a bit of an boost in game preformance + it let me play for 20 minutes. Now back to the same problem.