No idea how, or if, it’s related to this. But we found something similar when trying to create moving platforms with the sequencer.
From what I can tell, the server can’t keep up with moving collision boxes. Which makes creating moving platforms almost impossible. That said, we weren’t trying to move players super fast.
We also found this. When toggling off the checkboxes:
Use auto Navigation Flags
and
Can Ever Affect Navigation
for any actor we removed the rubberbanding.