[Zubersoft]

Without a way to reproduce this, it's going to be very hard to make any changes, as I can't get my Surface Pro 8 to crash at all while using the metronome and plugging/unplugging headphones. Do you have any other software applications on your device that may be trying to access audio through WASAPI or anything of that sort? I'm just curious if there may be some kind of conflict between applications. 

There are a couple of other things to test as well:

1) Bring up the metronome
2) Tap the settings icon at the top left
3) Enable "Prevent delay when starting metronome"

Now try to reproduce the issue. Let me know if this changes anything.

Thanks,
Mike