PCI Passthrough System Crash HP Z620

I have been trying to setup PCI passthrough on an HP Z620 System and am getting a system crash and reset if I install AMD drivers on the virtual machine that the AMD graphics is passed to.

This is the error I get. (Picture Below)

928-Fatal PCIe error.
PCIe error detected Slot 2
Reset Caused By SERR

Details:
OS = Proxmox
Virtual Machine = Windows 10

System = HP z620
GPU = AMD R9 290
CPU = Xeon E5 2620

Does anyone have any idea how to either disable the reset on error function or fix this issue?

serr