Every 3-4 minutes all players (2) are disconnected from the Realm. The disconnects do not happen at the same time. One player can be disconnected while the other is not. But all players are disconnected within 3-4 minutes of logging on. One player is on Nintendo Switch, the other on Windows 10.

Have tried loading up a backup, have tried opening a new realm and uploading a backup to that realm. I have downloaded the world and played it offline, no issues. This started happening 3 days after the 1.14.30 update. We were playing the realm during those 3 days with no issues.