DR SERVER working random

[INTHEMIDDLE]

Hi!
We have a big problem with distributed rendering: nodes work or not in a random and discontinuous way.
I attach some screenshots of the current situation.
The job that is running should have 4 nodes helping it, only one is working.

[maru]

As the first troubleshooting step, please update to Corona 12 or at least 11 Hotfix 2 - https://www.chaos.com/corona/download