I had these problems with a G1.
I disconnected the ear pieces, use a headphone/earplugs, and in device manager disabled the HP VR “USB Audio”.
It seems HP is drawing too much amp from the/a/random/powered-or-not USB (-Hub, guessing)
I still when I switch to VR (no more crashes) also refresh the ‘Default’ audio device (with a prog ‘nircmd setdefaultsounddevice’) when I notice a stutter in the VR MS Mixed Media Portal.
Don’t switch VR in MSFS full screen, Alt-Enter to Windowed screen, and after back to full screen. Another guess is MSFS is polling the audio devices at start/flight/end/intervals (for their microphone channeling, which is a baaaadly implemented).
Et voila, 100% better performance, no crashes.
2 cts, YMMV, it’s a pain, yes.