TLDR: Issues almost disappear with AMD GPU! I assume it's 100% NVIDIA driver or card failure.
I've tested games with AMD Radeon HD7770 GPU.
I'll be write Update 5 tomorrow with more details.
If you want some info before full Update 5 change-log — you can check MSI AB .hml logs recorded with AMD.
Hardware Monitor logs: https://drive.google.com/open?id=1riQbrv0E7QhWGAoXxnlmvmkmmdWMRDb7
Important Edit:
I have already returned to NVIDIA GTX 1080 Ti and tested Team Fortress 2. Everything was smooth and without spikes BUT at the end of last log recording frametime started jumping every 0.1-0.5 sec to constant 18.7 FPS! Something really goes wrong.
Team Fortress 2 logs (GTX 1080 Ti):
https://drive.google.com/open?id=1GgXC-kbaqWJO8WBgn5T4HdH5oOqT2YuB
Extreme spikes at the end of logging (screenshot):
https://drive.google.com/open?id=1ZZISlFClcQMHjSmAcZu9GeSgbxAuIl2p
Intrestingly I saw a post the otherday on the Nvidia forums which mentioned that stutter improved on a 980ti and 7850 compared to a 1080.
https://i.imgur.com/4k9SjKl.png
I also have a Pascal and have been stuttering for months but can't really seem to solve it. It's awful and I don't really play games now because of it.
I popped in a 290 and it was very smooth. Games actually felt better to play because it didn't have huge stutter every few seconds.
Although I don't think TF2 is necessarily a good game to test for stutter. I've personally had odd stutters on that game ever since they went crazy putting hundreds of hats in it across a range of systems.
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