Might be a trivial question, however I couldn't really find anything about this topic.
I run Veeam in my homelab and have Proxmox running on an older Mainboard with integrated LAN (it's a bit of a "fun to play around with" kind of server so nothign serious

Veeam B&R tends to pull a full Gigabit from that machine having a high chance of the network card crashing, I'd want to limit the speed to this machine somehow to not make this happen. I could potentially buy a new network card, however as mentioned above it's mainly a "fun server" where I'm just testing various things from free hardware I got over the years, so not really anything worth spending money on

Thanks a lot already!