When you are playing multiplayer or solo in your world or someone elses world you will start to notice some huge lag spikes while playing, I have experienced these lag spikes all the time and have discovered that this is due to the ´´auto-saving´´ cause whenever the auto-saving option starts to auto-save the game It causes a lot of lag.

Steps to reproduce:
1. Create a world (or enter an existing world)
2. invite your friends
3. just play the game
4. check the right corner on the top of your screen to see the icon of auto-saving

Result:
The auto-saving option will cause huge lag

Expected result:
It should not cause any lag at all (like in minecraft console edition)