After the recent update my gameplay on my offline worlds have become very difficult to play. Whenever my player moves it takes a bit for the chunks to render leaving behind giant spaces of nothing so I can't see where I'm going.  Also no matter whether I play in Creative or Survival mode this keeps happening and causing the game to load slowly and move much slower than it did in previous updates.  The lagg has also gotten much worse to the point that it can take me more than a minute just to walk to my house which is only 9 blocks away.