Hi, have you double check that there's no ohter vm that are using net network when you are performing speed test? Try use iperf in client/server mode and do a simple test from two vm that are on the same hci host.
After that, ensure that there's no other process (third part backup or another program) that comsume network bandwidth and redo the same test on two virtual machine sthat are on a different hci nodes.

Hi, have you double check that there's no ohter vm that are using net network when you are performing speed test? Try use iperf in client/server mode and do a simple test from two vm that are on the same hci host.
After that, ensure that there's no other process (third part backup or another program) that comsume network bandwidth and redo the same test on two virtual machine sthat are on a different hci nodes.