Help with Steam running Horizon Zero Dawn on a Proxmox VM

I realize this isn't exactly a Proxmox problem, but I thought maybe someone else here has experience with this kind of setup.

I currently use Proxmox running on a headless server hosting a Windows 10 VM with a GPU passthrough. It works and all is well. However, I am switching my gaming VM over to Linux Mint 22 and I am having growing pains.

Promox v8.2.4 server:
Motherboard: Asrock X470D4U
CPU: AMD Ryzen 7 3700X
RAM: 64Gb
GPU: RTX 2060 (I can't remember the brand/model)

VM:
OS: Linux...

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