Wild update makes game unplayable

Since the recent Wild update the game on ipad is so slow and buggy that my son and I have had to stop playing (both on different gen ipad minis).  The game takes more than three times as long to load, when it loads up it takes ages to fill in all the graphic detail leaving you able to see through walls and floors for ages.  The sound is not in time with your actions (occurring up to half a minute after).  When mining or placing blocks you can remove or place up to three blocks before this is shown on the screen so building and mining is nigh on impossible! When using the direction functions on the screen you now can’t use the right arrow as it moves you only once and then becomes a “use” function. For example, when holding a pickaxe and trying to step right you end up chopping up or attacking anything in front of you! The game runs so slowly and the redraw of blocks and background often leaves you “floating in mid-air”.  When playing together with my son he is constantly being disconnected from the server.  Can we PLEASE roll back to the older version?!!!!!