Effective Way of profiling nDisplay Cluster

Hello everybody,

does someone know a good way of profiling the whole nDisplay Cluster?
Especially:
knowing the average FPS of the Game/visualisation
Latency of the Messages passing between Master and Slaves

I have a cluster(4.26) with a Master PC and 4 Slave PCs, which have their own projector.
Everything works like a charm but now i want to evaluate it.
There are several methods in Unreal Engine but they all for only one game. Since nDisplay (in my case) starts 5 instances on 5 different devices simuntaneously.

Did you figure this out in the end? We also experience that ndisplay takes a lot of performance to run, compared to regular editor. Would be good to understand what takes up the resources.