I had about 600k rested xp before I finally started trying to level. I spent an hour the previous night farming herbs/ore (and sold what I farmed - less than 6 stacks total - for 3k) and earned 400k XP for that hour. This morning I played for ~ 2 hours and hit 81, which means in 3 hours I got 1.68 million xp or about 560k/hour.

That was solo-boxing - I'm sure it would be cut by 50% with my full team, but I am not crazy enough to try and level in this crush with 5 characters at once.