How to change levels smoothly using World Partition?


I have 3 levels that are using World Partition and when I try to teleport between each level, the game freezes for a couple seconds and then opens the level.

How do I avoid this freeze, and make the level change smoother?
I have a simple blueprint, that when I interact with it, it simply opens the other level.

I also understand there are level streamings and stuff… but it gets quite confusing when you try and work on World Partition as if it was World Composition.