Constantly disconnecting. Also the ruby pipe system should be considered gambling. The odds are far too low. After 40 pipes in a row received only 1 new high teir item. The multiplayer is plagued with people rooting their phones to cheat to a point it's unplayable. Side ways driving so you can't drift. All items have no effect on them. Uninstalled, there are way better games out there. Sorry to the mario kart fans out there. You won't find that fun here.