Since the release of Minecraft bedrock for PlayStation 4 the game has this problem. Every time the autosave starts the world freezes for several seconds (mobs don't move, chests don't open, inventory doesn't open, blocks disappear, can't eat, damage is delayed, etc). It feels like you're on a server and you have bad internet, but in your own world.

Edit 25 April 2024:

The problem continues to occur, so I will go into detail about it.

Basically what happens is that when the auto save is executed, the world freezes completely (every 10, 30 or 60 seconds). During this period, these things happen: 

1- You cannot interact with anything (mobs, chests, blocks, inventory, any entity, damage, eat food, etc.). 

2- The ticks freeze, so redstone, mobs, and even the day cycle stop working for several seconds.

3- Some sounds stop playing, for example: the sound of footsteps, the sound of mobs, the sound of blocks and even background music may freeze.

4- When you break or place blocks, they may return to their place or they may return to your inventory, causing you to have to break or place them again.

5- The chunks will not load or generate, so if you go too fast you will not be able to advance until the auto save finishes. (Example: Flying with elytras, riding a boat, traveling with ender pearls or even going on minecarts. In extreme cases, even walking won't give the chunks time to load.

6- As the size of the world gets bigger, the auto save lag gets worse and worse.

What should I do to reproduce this problem?

1- Play as usual

2- The problem will begin to intensify as the world gets larger (example: +90MB = Light lag, +300MB = Severe lag, +900MB = Unplayable lag, etc.).

3- Your world will have so much lag that it will become unplayable, so you will be forced to stop playing in your world.

Here's a video showing an extreme case of several minutes, but usually no more than 60 seconds: https://m.youtube.com/watch?v=QwI5SwuMj-o&feature=youtu.be