Ever since minecraft bedrock version 1.12, the game is becoming unplayable. Every world I create, after a few hours of play time, ends up to where I cannot load it back up. I create back ups every time I save and quit and the back ups become broken. I do not use texture packs and it's always survival. I even tried making an old world type map and after a few hours of play time, it's just gone. I really do enjoy Minecraft, especially on the switch because it's so easy to access and I'm always on the go, but it's getting to the point to where I can't play.