Autosave function causes lag, which redeems the game unplayable.

This happens not only, but especially in a world with a large filesize. For example my current minecraft world is 234.4 MB, and the autosave function makes it genuinely impossible to play without dying repeatedly. At this point I choose not to even play because it is too risky.

The autosave icon shows up normally when staying perfectly still, but as soon you start walking, jumping, running or doing anything it begins autosaving non-stop. I even tried timing how long the saving takes via a stopwatch, but I gave up after it had been autosaving for four consecutive minutes.

The biggest problem is that it freezes the game, sometimes even for a couple real-life minutes so that the player literally cannot do anything. Once the autosave is done Steve is almost certainly dead and you have to respawn.

Autosaving must be causing this problem because: My settings are at the lowest therefore optimizing performance, no autosaving along with zero lag but only when staying still, every time and only when the autosave icon shows up the game freezes completely and continues normally only when the autosave is finished.

Also minecraft is the only game my device struggles running. No freezing in any other application.