Speaking of Windows 11 here, I've never got the official standalone NAM app to work properly on any of my machines. With a fresh install everything seems to be fine until one day random crashes, freezes or audio issues appear - eventually the app wouldn't even launch. A proper clean reinstall has never fixed the issue either so I've given up on it entirely.
NAM Universal has been working flawlessly and is my go to for standalone NAM captures.
EDIT: I'll look into making a bug report once I have time to investigate this issue on my end as well, perhaps I'm not alone with this issue.