Quote Originally Posted by UBERHAXED View Post
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.
Ahh, for the highest pop servers I see. That explains it. Just never realized there were THAT many players on those worlds.