Game stuttering at high frames.

[mattamomo]

OK, long post coming up:

I use to have a 980 ti in my system, for a good long while it started giving stutters and crashes a bit too much for my liking, I tried a lot to fix it but Messing with settings and fresh installing Windows didn't help. Gradually it got worse over time until it died just recently.
I bought a 1070 and put it in my system, the first day it was great, but shortly after I noticed similar issues that I had with the 980ti, but rather than it taking months to show itself, it happened near instantly.

Frames drop from 200+ to around 110-170 and get really choppy, with a few crashes.

These are the afterburner graphs when a stutter happened (the final quarter of the time line):

https://imgur.com/a/LDCAmGz
https://imgur.com/a/TUfN5AO
https://imgur.com/a/d3Y9lej
https://imgur.com/a/1tG8AjR
https://imgur.com/a/FyGF3zd

I fresh installed Windows again and made sure settings and drivers were correct, but the issue persists.
What could be the issue and how would I fix it?

Any help appreciated.

System Specs:
R5 1600
GTX 980 Ti initially, now 1070
16 gb Trident Z ram
EVGA SuperNOVA G3 750W PSU
Samsung SSD
MSI B350 Tomahawk

 

[Lutfij]

List your full system's specs inclusive of your OS. Did you try uninstalling and reinstalling your GPU drivers with the latest off of Nvidia's site?

 

[mattamomo]

List your full system's specs inclusive of your OS. Did you try uninstalling and reinstalling your GPU drivers with the latest off of Nvidia's site?

System Specs:
R5 1600
GTX 980 Ti initially, now 1070
16 gb Trident Z ram
EVGA SuperNOVA G3 750W PSU
Samsung SSD
MSI B350 Tomahawk
Windows 10

The other thing I should say, is the 980 Ti would frequently display an error light on the Mobo and fail to post, sometimes turning it off and on again repeatedly would get it back to normal, other-times I had to take the GPU out and reconnect it (although that wouldn't work with great success either).
The current 1070 isn't doing that... Yet.

I did a full reinstall of my OS and drivers.