I upgraded to windows 11 by accidentally pressing spacebar on startup
(piefedimages.s3.eu-central-003.backblazeb2.com)
It's been wrong with all of my Windows PCs for over a decade, It doesn't seem specific to any software on them, so I say it's a windows general issue. I've even run memory diagnostics from a bootable USB, no issues. I've verified the same machines can boot Linux fast and perfectly fine.
I've even seen memes about it, it's a really common problem.