For the last two weeks the game has been unplayable due to lag on the Android version when connecting to realms.

Playing on a local world in Android is fine, it is only when connecting to realms that it is so bad.
Other Windows 10 clients connected to the same realm over the same internet connection do not have the same level of lag (though it had been pretty bad recently)

Updated to 1.0.6 and the problem still persists.

Samsung Galaxy Tab 10 (SM-T817V), Android 6.0.1