FPS stutter while gaming, BurnInTest might have shown something new

[Sekaisen]

I have been battling (micro)stutters in games for a long time, and recently started going through different benchmarks. They usually say everything is fine, and/or that my components are performing as they should or better.

Games are generally varying degrees of bad, but Dota 2 is bad in a very specific way, looking at the frametime graph (uncapped fps, from the same game):
https://imgur.com/a/cwFcBX1


I just downloaded and ran BurnInTest "3 Minute Test" of "everything at the same time", and noticed the 3D animation stuttered heavily, like an extreme version of what I see in Dota. The test completes with 0 errors though. I then ran the 3D-test only, and it ran super smooth, with twice the average fps:
https://imgur.com/a/UxLc8VC

I guess there could be loads of places to post this, but I guess my question for here is, is this normal for this test? And if not, and it is related to my problems in games, how can I identify what happens during the 3 minute test (and apparently also while gaming), that makes the 3D animation stutter?

[David (PassMark)]

BurnIntest (depending on the configuration) puts a very high load on all the hardware simultaneously. CPU, RAM, Video card, Disk.
So stuttering on the 3D rendering is normal in these circumstances.

I would be looking at what processes you are running in the background. Then looking at DPC and ISR times (these are measures of how long it takes your machine to service a interrupt, usually a hardware interrupt from some device, like a hard drive, that needs attention).

This article is a good place to start
https://learn.microsoft.com/en-us/wi...t/cpu-analysis