We’re aware of this issue and the log spitting out an error that suggests you’ve hit the max uObjects of 1 million.
A workaround that was suggested while we work to get a fix out:
Go to DefaultEngine.ini or BaseEngine.ini, find:
[/Script/Engine.GarbageCollectionSettings]
change: gc.MaxObjectsInGame=1000000
to: gc.MaxObjectsInGame=7400000
Please let me know if you find any success with this ini change. I also understand if you do not wish to go fiddle with .ini settings.
I’m sorry for the trouble in the meantime.