Quote Originally Posted by Hasrat View Post
That's typical on expansion. Your previous stats were for near-endgame, you are no longer near endgame. Rebalancing for new level cap and stats available means what you had isn't going to feel as powerful.
This is true and can even be tested.

Get yourself a lv 50 set with some skillspeed, queue for a lv 50 dungeon, your Global will be pretty fast.
Now unsync it and your Global will be almost 2.5 sec.

There is a constant squish after every expansion, im not sure how the system calculates it though.