Killing lvl 90 mobs with a lower lvl in the party is giving insane xp (EXP scaling is bugged or something)
Frogs @ timeless isle is the best place to go due to the respawn rate
Since people are asking here's the best way to get to timeless:
a) Get a lock to summon you straight there
OR
b) Get a Mage to port you to shrine then fly you there
Mod Edit:
Anyone trying to sell spots or bragging about supposedly knowing, and not posting them will be banned.