Realm kicks all users, rolls back variously. Undetermined cause.

Issue

Over the past month or so- in fact since around the time 1.12.0 released for Bedrock Editions- our realm members have experienced frequent (several times a day) server-wide kicks and forced rollbacks (the world reverts to a less-developed save) so that all members online are forced to restart anywhere from 10 minutes to an hour (and sometimes more) of work and building on account of them.

 

This issue has persisted into version 1.12.1 for Bedrock.

 

Realm Info

Players: 180+

World size: 3.9GB

World type / Gamemode: Infinite / Normal Survival

World origin: September 2017 (Better Together Update)

Suggested Causes

One of our operators has suggested a certain location on the server may be causing the server strain responsible for these crashes- namely an island surrounded by coral and deep Update Aquatic ocean, which also holds lots of packed entity data on account of large duplicated storage.

Other than this, we simply aren't sure. We have several players on when these crashes happened and so haven't nailed precisely what event may be triggering this.