Predictable frame stutter every 30 minutes

[DarkArvan]

I have nearly the same configuration (4080 S and 5800X3D) and this issue dont occur on my PC.

You are writing about a TPM problem - is your BIOS/UEFI up 2 date? There was a major TPM Stuttering Bug and it got fixed a while ago.

Otherwise it have to be something running on your PC in the background with interrupt this every 30 minutes.

[Beavertales]

I have a proprietary BIOS from when it was in a Corsair prebuilt, so I can't update it/there's no update available for it. However, I don't think it's linked to the TPM events because:
1. The TPM events only occur sometimes, and have been occurring on this PC for months with no issues.
2. The TPM events only *sometimes* line up with the stutters. For example, I had one at 5:37 EST, and the most recent TPM event happened at 5:19