Thank you, dcsapak!
I read the bios dump / pass procedure (https://pve.proxmox.com/wiki/Pci_passthrough#How_to_known_if_card_is_UEFI_.28ovmf.29_compatible)
I want to try this method, but before that may I ask you
Is passing the rom = flashing the rom, or it is temporary setting?
Can I brick...