Random freezing in certain worlds

I have a world that I play on frequently. Every time I play in it, the game freezes for about 3 seconds every 20 seconds, then goes back to normal. This happens constantly and makes the game hard to play.

I’ve already tried restarting my iPad and even deleted over 200 worlds to reduce lag and free up storage, but the problem still happens. I believe this might be a bug in the latest version (1.21.80), and I hope an update can fix it.

Please help me fix this issue—I just want to play my favorite world normally. Thank you!