FaceTime in Monterey LOUD pops, no other audio
I just updated my Mac Pro (late 2013) to Monterey. Everything seems like it's fine, except when I just tried to have a FaceTime call, there was a truly jarringly loud pop every second or so instead of the sound from the other end.
They could hear me perfectly fine, but I couldn't hear them. And the popping sound was shockingly loud.
My speakers are working fine otherwise. I tried switching the audio output to headphones and got the same result.
Bummer. Please help!
Mac Pro