Please mention whether you’re on stable, beta, or a different update channel. There’s a good chance most bugs on the stable update channel have been fixed already, so anyone on the beta update can let people know if the bug they’re facing is already fixed.
I’m a musician who is just getting started producing on Linux. I haven’t had issues with audio aside from my audio interface not being compatible due to have software control for hardware which i hated anyways. Using a focuarite interface now and its been good. Pulseaudio has been pretty solid for a while now which is what the steamdeck uses from what i can see online.
Both my mic and headphones have worked great with all distros I’ve tried. That said, sometimes stuff just doesn’t wanna play well with Linux, even if it seems like it should and im typically not using bluetooth devices on Linux for audio so im not as familiar with issues they may have.
You might try another set of headphones to see if its an issue with the headohones themselves. And or, try them with a different distro/pc because it may be a issue with the deck itself.
It uses Pipewire, but it has pretty close to full API compatibility with Pulseaudio (and Jack) so most applications will “just work” and you get lower and more stable latency in return.