I work with Windows 11 and don't see any major issue whatsoever. But note that 16GB RAM is "just" enough to run it smoothly. 32GB is better for serious (e.g development) work. I have run it even on Intel 4200U/4200M CPUs fine (CPU is from year 2014).
I agree that new Outlook is buggy and not fully functional - that's why I still use old native MS Outlook.