PPPoE Over VirtIO 802.1Q VLAN - Multiqueues? Proxmox/KVM

[blackpaw29]

I have have successfully configured 3 ADSL2+ modems to work with a pfSense VM

Each modem is plugged into our DLINk DGS-1210 Switch (ports 1,2 & 3)
Ports 1,2 &3 are on VLANS 101, 102 & 103 respectively.
pfSense is driving them via PPPoE vlan interfaces

• vs 2.4.3.1
• ProxMox KVM
  4 Cores
• One virtio nic
  4 queues
• All hardware offloading disabled
• Also serves two IPSec Site-Site tunnels

Much to my surprise it actually works and is providing load balanced WAN to our SMB. Haven't stress tested it yet.

I think pfSense supports multiqueue natively and I'm running the LAN port and 3 tagged WAN ports off the one virtio nic. Its not like its a high bandwidth wan, each adsl modem syncs at 15MB/s (welcome to "broadband" in a major australian metro area).

But I'm wondering if it would be more stable/better performance to just create 4 nics and dedicate each one to a separate connection.

Thoughts? thanks.