e1000e eno1: Detected Hardware Unit Hang:

Same errors here.
I see that proxmox has had problems with Intel NIC for many years.
What card should I buy for this to work properly?
Or maybe that's just the way proxmox is?
 
Also wanted to give a big thank you for
ethtool -K eth0 tx off rx off

Disabling TCP checksum offloading worked for me
This seems to have solved the hardware hangups and DRASTICALLY improved the network latency for the webapps I am running.