Comment 1 for bug 1674117

I stumbled across this bug: https://bugs.launchpad.net/ubuntu/+source/linux-rt/+bug/367671
Im not sure if that bug relates to this one, but after disabling realtime scheduling, pulseaudio does not crash anymore.
However, the lag when starting the VM got significantly worse, the system is pretty much unusable the first ~20-30 seconds.