What I ran into

I just created a nether portal in my main Nintendo Switch survival world, and the game becomes unresponsive.

As I waited 8-10 mins, Sounds lag minutes behind, physical buttons are unresponsive to the game, the game is frozen in time, and I cannot switch/use items in my hotbar. The only thing that was responsive was the movement sticks (move & look).

This is with the Caves & Cliffs/Experimental Features toggle enabled.

Additional (unrelated to above) Detail/Request

Also mentioning how annoying the bugs on switch edition bedrock, even with the experimental toggle disabled I experience some extreme lag when loading chunks on overworld & nether. Chunks take as long as tens of seconds to render sometimes, and don't get me started on when the world auto-saves (which can make new chunks render for minutes). 

Pleeeeease optimize the Bedrock Switch Edition extensively. I understand I have experimental features enabled on my world, but overall the Switch version is extremely buggy/laggy (not by framerate, but by ticks seemingly). It's convenient carrying my Switch around to play games but it's annoying when it's this hard to enjoy one of my favorite games.