Not sure how to reproduce it on demand but it has been occurring reliably around 1 time per hour or once per match. I use an audio interface (zoom UAC-2) - and when the audio cuts if I'm not able to fix it by switching audio mode from speakers to headphones and back I can fix my audio by power cycling my interface. I know it is not my interface having the issue as I use it regularly without issue for work and other games. It has occasionally also happened while in the lobby. I suspect it may be an issue with the game shifting between windows audio playback devices on its own somehow.