I see someone has commented that this is mob related, but for me it is not. I’ve had the game on peaceful so I could mine in the nether and the autosave freeze and kicking whoever joins still happens even with no mobs around me.
I’ve had the exact same issue + the added bonus that anytime someone tries to play in my world with me and the autosave freeze happens, they get kicked—multiple people have tested this to make sure it wasn’t a fluke with the first person and it is not, in fact, a fluke. I installed the latest update this evening and the problem is worse than ever.
New info as of 5/5/2022:
Whereas a week ago the game was freezing every 10 or so minutes, it’s way more constant. In fact, the game is freezing so constantly it’s unplayable. Kicking anyone in my party frequently (and no, it’s not internet). Very possible I won’t be able to touch the game and play/engage marketplace until this is ever patched.
PLEASE fix this soon, mojang.