Thanks for this - yeah I’ve investigated and found the same. The Crowd Manager I can only assume was used for some Demo but there’s no docs or working examples on it. I also found that adding the Replication Trait, the fragments don’t get picked up. I’ve got 5.1 checked out to see if there’s movement in this area, I do see a lot of updates but we’re really missing some guidance on whether this is worth exploring because it might simply not work yet despite being named and visible in the code base.
It seems the 5.1 updates add a fragment for a Hash grid to maintain LOD distances - probably to increase efficiency of lookups for networking updates. I’m really interested to see how this evolves!