Optimal Settings for Virtualization on Proxmox

[banana999]

I'm using OPNsense in a VM as my router, and just had some questions about the optimal settings.

1) Do I want to enable PCI Passthrough (marked as an experimental feature), which will allow enabling hardware offloading?
Would I do this for both the LAN and WAN NICs or just one? The PC has one Intel and one Realtek NIC.

2) If I don't do the PCI Passthrough, should I enable Multiqueue for 1 / both NICs for the OPNsense VM?
And what number should it be if my physical CPU is 2 core 2 threads?

Thanks!