Performance issues:
1.when difficulty is set to normal or easy mode the game begins to start lagging constantly in the overworld including in the nether.
2.Breaking any block or eating any food items take even longer to do and sometimes it even stops their animations while doing so.
3.ever since the render dragon engine was released the mob spawing feature's are getting more and more CPU reliant as more updates get released over time which makes the game unplayable due to its current performance.