Upgraded to 6.6.1 and all of my VM's have disappeared. If I install a new one it will be gone the next day. I need to enable PCIe ACS override so that I can isolate my gpu and it says, System must be rebooted for changes to take effect! When I reboot message is still there and IOMMU groupings are still the same.
tower-diagnostics-20181002-1832.zip