Question Sudden microstuttering and noticable reduction of performance in games - affecting CPU bound games more significantly

Laxx

Distinguished
Jul 24, 2016
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18,510
CPU: 13600KF
GPU: 4080 ROG Strix
Mobo: ASRock | Z790 PG Lightning/D4
RAM: 64GB Corsair Vengeance LPX 3600MHz


Some time in the past week my PC suddenly began producing microstutters in games, a reduction in fps in more CPU bound games (WoW, PoE2), as well as a noticably increased reduction in performance while running additional background tasks (watching streams, videos, or many open tabs in chrome, or streaming my own content or watching others stream content in discord) than was previously observed before this issue began. I've also noticed very infrequently flickers of picture display - maybe 3 or 4 times total in the past 5 days, and a few times while draging a window around the desktop I've noticed a microstutter in it's movement across the screen which is new.

I have typically run a modest overclock on my GPU (150MHz core, 1000MHz memory) and either run my CPU stock or used the Intel Extreme Tuning Utility's "speed optimizer" which has pegged it at 5.5GHz, I have never overclocked the RAM or any other components.

Outside of this recent issue, I find it pertinent to mention I have also experienced an issue for quite a while that I believe is related to static, but could be related to the current situation. When standing up from the PC, or vigorously swiping across my cloth mousepad to clean off dust or other bits of particulate I will notice my computer monitors flicker, less frequently my primary ultrawide monitor has at times fully stopped output for a moment having the PC detect it and swap my secondary monitor to single display output, and then switch back to both displays outputting a moment later.

At first I thought it might be a driver issue and as such have already DDU'd to a fresh set of drivers, the previous revision, and even several revisions ago with no change. I have tested at stock with no overclocks in all these reinstallations to eliminate overclocks as a factor.

I've reinstalled a fresh copy of windows to eliminate the possibility of corrupted windows files, but am still experiencing the issue.

I've run windows memory diagnostic which returned no errors, I've run OCCT's GPU VRAM and Variable tests showing no errors.

At this point I can no longer think of obvious knobs to turn and so I'm looking for some input. I appreciate anyones help.

Here is my MSINFO.nfo:

https://mega.nz/file/Dc8igLgC#80fdDZnrfQlTC1BgwXX_RMUDanQce7HVANj09M8_VV4

And my DXDIAG.txt

https://mega.nz/file/2cdmRaCK#6gtKYlK_0ZHMVJfdWmAS4nEe5UStGqBUvmFPBqaysxE
 
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Something else that may prove relevant:

View: https://i.imgur.com/LZdU30n.png


I'm noticing that even when I'm not getting microstutters, I'm still seeing a constantly spiking frametime with steady FPS - here is a period in-game in the sandbox in Deadlock (outside the red box shows periods of me alt tabbing out of game and is not a reflection of in-game performance)

Here is a frametime graph of a furmark run

View: https://i.imgur.com/q5aTag8.png


The actual score of the run:

https://gpuscore.top/furmark/show.php?id=1580580

appears to be consistent with 4080 scores.
 
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