FWIW, all of those with issues should download Etrecheck
from the MacApp Store, run it and post the results here
using the additional text icon at the bottom of these windows.
I find more often than not that there is some third party app
or extension either knowingly or unknowingly installed that
are causing such issues or said apps are simply not compatible
with the M1 or for that matter macOS Big Sur.
My MacBook Air (8 CPU/8 GPU/ 8 GB RAM) model is running great and
beyond all my expectations. So, there is something unique
on your individual systems that is causing problems.