So I did manage to find a temporary workaround and pintpoint the overal problem. If I have an Itween node kicking off AT map start, it crashes the multiplayer game. But if I set it with a timer to go off in even 2 seconds after load, it’s just fine. Something about loading a multiplayer map with itween nodes from the very start is crashing it every time. After the map loads, I have several widgets using itween with no issue. Just wanted to let you know!