Now that if you think about it, theres a maximum number of PVE kills you can get. You stop gaining exp if your like 4 lvls higher than the reccomended lvl for a dungeon so assuming you do FH 1-13 DF 14-18 BC 19-23 FC 24-28 LE 29-33 AS 34-38 AO1 39-43 AO2 44-48 AO3 49-53 BS 54-58 NH 59-63 MF 64-68 H 69-71 solo, you'll get to a point where you cant accumulate anymore exp. Not sure but you can dump huge amount of plat for gaining exp in 1-71 in FH first dungeon though its not worth the effort.