Creative map test Game keeps freezing then crashes Fortnite

Hello, LlamaDad90 here!! The Creative map that I am currently working on building (It’s a Tycoon!!) Is crashing the whole game on my Xbox when I try to play/test it (I Build in UEFN Fortnite on my PC and play/test with My Xbox Series S) Only when the creature spawners start to spawn creatures. I think it is because I made some verse devices that hide the Fiends, Rangers, Brutes and MegaBrutes and replace them with my own created characters with animations