you might be able to stop the problem by making the whole bindstone area a random spawn point. what i mean is from the center of the bindstone, where everyone spawns, out to its border and anywhere in between should be a random spawn point. when theres 300 people standing in one point of the map, it blocks players from getting out in a certain direction. it means theres 300 different obstacles the size of a pixel, i assume, standing in front of you. the server is just dumping them in one behind the next, but cant place them in the exact same spot because its occupied by someone else.