Lag+Server Disconnecects

The game loads pretty slow, and frequent freezes occur. When I join any server (such as Mineplex) I get disconnected within 2-3 minutes. I don't recieve issues like this in any other game.

I found something on reddit saying that if I were to backup my save data and then delete my save data that the disconnect issue would no longer occur. This is cool and all, but if I want to play on one of my worlds I'd have to restore my data just to play on my world, and delete my save data just to play on a server. I'd love to play Minecraft properly on my switch...

(Version 1.11.0)