/instance to change instance

[UBERHAXED]

Wait...there are different instances of areas in this game? That knowledge right there has blown my mind. I've been playing since the launch of 2.0, and I have NEVER seen a different instance of any map in this game, there's never that many people in a zone unless there's an S rank hunt, other than that I've never seen any area outside of towns filled to the brim with people (and even then, only Limsa).

http://na.finalfantasyxiv.com/lodestone/
... under
[Important] Congestion Prevention for Heavensward Release (Updated Jun. 25 2:45 a.m. PDT)

Was added as a countermeasure just for HW (and therefore HW areas) and only for the specified worlds.