I changed audio interfaces (to an RME Fireface UCX II) and now the "Ambient Sounds" has very distracting static. (If I turn off Ambient Sounds in the Sound Settings there is no more static.)
This doesn't happen with other applications — as an audio professional I would notice
I captured + recorded the audio for you: https://voca.ro/12GWA2AeIlQX. I've tried 48k and 44k sample rates, both sound the same.
It's lame because I just switched from a different professional interface (Apogee Quartet) and on that interface FFXIV thought I had a surround setup when I don't, and I couldn't hear the dialog because it's on channel 3/center, and I only have two channels, Left and Right. (Yes my audio configuration was set to Stereo in Audio/MIDI setup.) Now with the new interface, I hear dialogue but I get this weird static issue.
I must say FFXIV's audio integration with macOS has given me nothing but trouble!
Computer specs in signature.
Edit: you can see FFXIV sending bad audio to random outputs on my interface: https://ibb.co/2FDpV5g. But I think this is a different issue because I can't hear this since I don't have speakers connected to those outputs. Just another FFXIV audio bug I guess.