I ground for 4 hours and got level 108...I don't see your problem here.... You want everyone to be max level after just a few days? Nahh work for it and grind your ass off. Push yourself to learn to kite bosses, mobs. Learn from this low exp rate and these high pill costs. Gets easy after you know a few tricks.
They adjusted the exp for obt like x16 with the x2 event. Way to high if you ask me, this version was supposed to be kind of hardcore in the way of leveling. Usually you got 9% for your first Kobold now its 170%.
to me the exp is okay. new players just need some guides. as an experienced 12 sky 2 player, i have lot of issue with the healing pills, bugs, and unbalance of players