My game just updated with the caves and cliffs part 2 and everything got super glitchy. Blocks keep freezing and returning. In splitscreen I can't even open a chest. Nothing happens. Everything is severely delayed, freezes for several minutes, or reverts back as if nothing happened. The person I was playing with kept getting attacked by invisible phantoms in the house. He would exit the game and then come back in only to be somewhere else than where he was when he left. He tried to run and ended up swimming, on the grass. At this point the game isn't even playable.