The game crashes a lot! Fix this very laggy in my device (Lenovo Tab3 7 essential) and when joining a single player world if I tap a wrong world I need to join the game then left the world! so add a cancel button like multiplayer in single player!

Lags a lot in lenovo tab 3 7 essential! And make a cancel button when joining a single player world!
And sorry for that that I select device lenovo A10 because my device is not in the list! my device is (Lenovo Tab3 7 essential) don't forget to fix!