Enter the world of friends

First, it is impossible to communicate between switches in the Switch version.

It does not create the world, waves come and go on the load screen and its not move from that screen

If you can use a special method (wi-fi's wired to wireless switching method etc.) you can somehow communicate. The second thing lag happens regularly when it is possible to connect to the world. When a lag occurs, you finish swimming in the sea, when you climb to the land, you can swim in the sea or you can not open the chest.