I HAVE FIGURED IT OUT
If you use pipewire (which most if not all modern Linux desktops do, especially ones that ship Wayland by default), you can make custom sinks (basically virtual audio input/output devices). HOWEVER if you do not add the “device.properties” section in pipewire.conf when making them, TeamSpeak crashes as it always assumes this will be there. However nothing else I have ever used has required this as I’ve had these sinks set up the same way for years without any issues.
If someone on the dev team can see this, please change how TS6 reads pipewire sinks to ignore if devices.properties is not there and pull the name from factory.name in its place
The solution was in this thread fro TS5 at the very bottom: (Solved) TeamSpeak 5 client refusing to start: SIGSEGV - #19 by Profpyrus
