World Load Kickout

Every so often when I load up a world, after creating it for the first time, the loading process goes as far as loading the resource packs and begins loading the actual world itself, the game just kicks me out. When this does happen, it acts like I left the world, it saves the world resource packs and returns to the main menu. It gets very irritating when I'm trying to get on the world, and it doesn't help that the load times are as long as they are (even though I'm certain that's a device issue).