Hi Iciclebar,
Thanks for your reply, as per my previous post, the two processes I can see smashing the GPU (even though it doesn't look like running at its best anyway) are System and Desktop Window Manager and I can see both running as 3D and Copy.
I had high performance set in Windows on the old VM, haven't tried with the new one I created, I'll give it a go.
Should I also try an older driver for the GPU just in case? My feeling is that Windows is not handling the GPU the way it should when running as a VM.
Another thing that puzzles me is that, being a Gigabyte card, I tried to install the Aorus software and it works on the bare metal W10 but it crashes while opening when in the VMs.
It's like it's passing a lot of load on the GPU. When I tried a bare metal install the GPU was sitting at 0% when idle and running the Skydiver test in 3DMark gave me around 75FPS in the combined result. When in the VM, 3DMark doesn't even load the test and hangs while loading system info.
Edit: I updated Unraid to 6.6.6 from 6.4.0 just in case, I'll do more testing as soon as I have time.