[ziml77]

Does Windows think that audio devices are being connected or disconnected? That's the only time I've had the default device switch on me. Annoyingly it can end up happening if you have a display that presents itself as an audio endpoint and then that display is turned off or even just goes to sleep.

[therein]

Interesting perspective. I had always blamed it on something pertaining to my VFIO setup but I think you are pointing out something that might be at play here that I hadn't considered before.

I'll disable the speakers on the monitor from the HW menu on the monitor and see if that helps.