I didn't notice a signal 10, but did notice in /var/log/middlewared.log
VMService.__init_guest_vmemory():830 - ===> Cannot guarantee memory for guest id: 2
Wired mem sitting at >12Gb of 16Gb
All OK after a reboot, but over time wired mem increases, the VM stops and I can't restart....
Travelling early tomorrow, so will look again over the weekend