Aergia

I am currently lvl 59 but it has taken over 4 hours to get there from lvl 55. Is that normal? If the game takes longer than an hour per level, excluding the dungeon. I will have a hard time getting into this game. I can only play, at most, 2 hours a day. Is that even feasible in later levels? I was lead to believe this version had the fastest leveling speed of the Lineage 2 games. Does not seem to be the case.