I eventually figured it out, it was due to ntopng package and nothing to do with pfSense or Proxmox. I did find out that disabling pcie power saving can help:
add pcie_port_pm=off pcie_aspm.policy=performance to GRUB_CMDLINE_LINUX_DEFAULT in...
No sure how to interpret the first two, but I don't see any obvious errors using dmesg (output too long to post) and it does not seem like packets are going over iptables. Here is the output:
ethtool -g eno4
Ring parameters for eno4:
Pre-set...
Hello,
I recently did an in place upgrade to PVE 9, everything seems to be working fine but now the network card seems to be slow. I run pfSense in a VM with a couple of network interfaces passed through. I have not made any changes to the VM...