Spawning some structures in with scripts like this:

Object obj; 
obj = GetGame().CreateObject("Land_Mil_ATC_Small", "13841.500000 36.552799 12055.299805");
obj.SetOrientation("0.000000 0.000000 0.000000");
obj.SetPosition("13841.500000 36.552799 12055.299805");

some structures will have no collisions server side. They will show up for client, and client will think there's collisions on the items, but server side the player passes right through and eventually the client will rubberband forward to catch up to server position.

Video example: https://youtu.be/VyAKrygczio