how is your character's folder asset organized? it could be an issue of it not being organized properly, or there's something in there that it doesn't recognize (which will cause the game to freeze due to trying to read something it can't handle)
images shouldn't be an issue since the game will automatically ignore them if they're not formatted properly (i.e. too big / small); it could be an issue of having too many characters loaded at once since the game has a limit of how many can be in the game at once or else it will freeze
currently the game only supports up to 2 characters being loaded at once due to memory constraints, though I'd say test it out with a single character for now to see if there's a specific character you have that's causing the issue
