Common causes of people being disconnected as the map starts?

[KitsuneTailsPrower]

Is there a list of these somewhere? I'm trying to troubleshoot

 

[Pyrogasm]

Loading/preloading way too much stuff at once (on init usually) on computers with different capabilities is the biggest one I know of. I have always staggered all of my preloading and setup triggers to run at elapsed game-time 0.50 or later just to give slower computers a moment to catch up when the game initially loads. Put a black mask over the whole map on init and nobody will notice as you fade it out after all has loaded.