I got this same issue on 4.27. Got the nDisplay and LED to work. but could not update. I would like to also know how to fix. Since I have tested on 5.1 and I cant get the nDisplay to work on this either.
I am able to run the MU and nDisplay. I see “Node0” on the session in MultiUser Browser,
Still cant get stuff to update. Seems I am so close, but I must be missing something.
Update: CineCamera is working, it updates! But by nDisplay is not.