I'm on Arch, so I find I tend to have fewer issues than with Ubuntu (due to the latter always being on some ancient version). Seriously though when I switched from Pulse to Pipewire... I rebooted and I've never had any issues since!
Now, my biggest complaints are around i3 and X11. I get some flickering, and display management is a little painful. But those are largely self-imposed because of i3. I haven't tried switching to Wayland yet because it's good enough for me.
At this point, it's been years since I've used a Windows PC for work and... I'm so damn happy about it!
I've started experiencing flickering in non-compositing window managers on Arch a few months ago (I mainly use Openbox, although I've tried dwm too) after some update. My solution was just to run `xcompmgr &` at the session startup.