I wish I knew. Did you install Windows 11 on unsupported hardware?
Did you have issues like this?: https://www.youtube.com/watch?v=p-ba-7yHHsI
Fully supported hardware, no dodgy workarounds. It was verified from the Windows Update panel in settings, and it was a upgrade keeping files and settings. I've got TPM 2.0, Secure Boot, a new supported CPU etc etc etc. And no. The issue I had was when you click the start menu, it will not open at all. I could not click any search box neither. I could see them, just not click them. I thought that it could have been because I kept files and settings, so last night I did a clean install, but once I installed all updates it was broken again.
I am back on W10 Pro now, and although I do not like the cosmetic side of things as much, the stability side is brilliant. (Windows 10 still had more issues for me than W8.1 (the reason that is my favourite haha)).
Thank you for your time working on this, I know it's been an unsolvable issue, but still thank you.
Just in-case you're curious, and see others with this issue, below are my PC specs for if anyone else has issues. My bios/chipset etc etc are on the most recent updates.
CPU: Ryzen 7 3800x
MOBO: Asus X570-P
RAM: 32GB 3200 MT/s (D.O.C.P On & off had the issues)
GPU: RTX 3080
Storage: C: Samsung NVMe Gen4 - D: WD Black HDD - E: Samsung Gen4 NVMe
Network: Ethernet -> To Switch -> To Network
EDIT: To reiterate. I installed Windows 11 on launch day, and up until the past week everything was fine.