SolvedFastest leveling 55-70

What is it?
Currently I am running White tyrant's challenge... Its 50k xp per 135 seconds (so the runner says)
Anyone know anything better?

Irukul,Weeping Queen,Klaus,Laghodessa. One of those at least.

Shady forest , Colhen in flames , Nightmare at the ruins.

Spider Queen around 150000 exp per 60 secs

START game => skip cut scene => nuke => 150000 exp no limitation

repeat