Passing through network adapter to speed throughput up

[lumox]

I have this setup on my Proxmox machine's network:



and this for my pfsense VM network devices:



vmbr0 is the pfsense's WAN port, while the vmbr1 is its LAN port at which are connected the virtual adapters of other VMs created in Proxmox as well as the LAN physical port, so that pfsense can filter traffic both for VMs and a few physical machines on my LAN. Ok, everything seems to be working quite well.

Here is the diagram:


However, I noticed that the throughput is rather slow, so I was wondering if I can passthrough the enp3s0 port directly to pfsense in order to speed the throughput up a bit without messing something up.
Could you help me figure this out please?
Thanks

 

[spirit]

e1000 is slow, you should try virtio nic first, before testing passthrouggh.

 

[lumox]

e1000 is slow, you should try virtio nic first, before testing passthrouggh.

Can I modify it on the fly without messing the network configuration up somehow? Thanks

 

[spirit]

Can I modify it on the fly without messing the network configuration up somehow? Thanks

This will require at least unplug/hotplug of the card. Don't known how pfsense is naming interfaces.

 

[lumox]

This will require at least unplug/hotplug of the card. Don't known how pfsense is naming interfaces.

I have no problem at rebooting/turning off the machine. Most importantly, I need to figure out if something can go wrong. Thanks

By the way, is there any way to backup the Proxmox OS (not data or VMs) or the entire configuration. Do I need to use a software like, say, RescueZilla?