Freeze

I play minecraft 1.18.30 on the nintendo switch. When I start a world of 52 mb the game takes appr. 5 secondes to load the world with all the images. Then after 10 secondes everything freezes. I still can use the home button to the main menu and quit the game.

With a new world of 3 mb the images take 2 secondes to load but again after 10 secondes it freezes.

I tried everything the nintendo helpdesk gave me: delete and download the game, bug fixes, restart the console. Nothing works.