hashrate slowing down for a few seconds every minute on ubuntu server
Every minute or so, hashrate is slowing down for a few seconds then rise up to normal.

To minimize interference from other OS processes, I run the miner within a headless ubuntu server that I boot from a usb on my desktop machine.

Huge pages are fine.
1gb pages don't change anything.
MSR thing is fine.

Could it have something to do with my 8core/16thread intel processor? Though, from the third line from the bottom of the screenshot below, it looks like the miner is correctly going for 8 threads.

Any help would be appreciated. Thanks!

<img width="871" alt="Capture d’écran 2022-06-01 050708" src="https://user-images.githubusercontent.com/68520323/171331928-62c60d1c-6e1c-4b78-b8eb-ac834a2941b8.png">