I have same problema, but my GPU is two nvidia RTX 3090 em one AMD RX580.
I have 3 GPU and I want to passthrough to my VMS. One GPU is direct connect in PCIExpress 16x, but other two is connect in PCIEXpress 1x via cable riser (like this).
When I connect my RTX 3090 16x on VM, its ok. But when...