I had 2 shulker boxes full of tropical fish and pufferfish, and whenever I opened the recipe book or moved either of the shulker boxes around in the inventory, it lagged extremely. It took about 45 seconds for the crafting interface to open. I know it had to do with the shulker boxes with fish because once they were out of my inventory, the lag stopped. I would imagine it's due to that shulker box containing a lot of data.

I also want to ask something if anyone is willing to answer.  On xbox one, in splitscreen the players hand are huge. This has been reported, and been around since beta 1.2. Is this bug even being worked on? It makes it very hard to play splitscreen.