When I'm in the nether, the game "breaks" randomly

Entities don't move, pearls don't work, blocks don't drop, and I can't open chests.

This makes the game literally unplayable plz help

mods: atum 1.0.4 fast-reset v1.4.1 lithium 0.5.1 pogloot 1.8.2 sodium 0.1.0 speedrunigt 4.19 starlight 1.0.0 RC2

your game crashed im guessing.