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Latest motherboard BIOS might fix it:

https://www.techpowerup.com/295821/amd-releases-agesa-v2-1-2...

"This particular version of AGESA gains importance to those on Windows 11, as it corrects a performance-stuttering issue caused due to frequent polling of the fTPM by the OS."

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Indeed it's supposed to, but it doesn't fix it for me. Even if it did, it's pretty annoying that this problem has been around for at least 3 years without a fix.

(I’m the author.) That’s the version I’m running.

Sorry to hear, I have the same problem and was hoping the update would fix it. Although the latest (beta) update did improve things a lot.

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