Hi,
I'm new to Proxmox having only installed it in the last week for my combined server/workstation build (AMD Epyc 7282, Asrock ROMED8-2T, Nvidia GTX 1660 passthrough, Silverstone ECU05 ASMedia ASM1142 PCIe USB card passthrough).
I have a Windows 10 guest I have passed through the GPU and USB...