In split screen if one player opens a UI the other players lag, freeze, or can't break/place blocks.

Minecraft split screen is nearly unplayable. When one player opens a menu the other is frozen. Breaking blocks freezes players, walking freezes players. When they move again they are randomly skipped around. Have been killed by the serious lag and glitches cj ing. It has been getting progressively worse with every update to the game. Wish we could have Editions back….it was flawless.