Hi clambert,
the message
warning: guest updated active QH
is related to the free disk space for the VM's image.
It has been discussed here: https://forums.unraid.net/topic/55391-solved-vm-is-always-paused/?do=findComment&comment=542810
In my case I had no free disk space for the "raw" image on BTRFS filesystem. I increased disk capacity and now it seems to be OK.