Theres a cheese mechanic where you eat xp boost food, make a full inventory of xp quintcast spells using coins and find a place like the duscae meteor craters that can bug out and infintely spawn magitek soldiers -something that gave me my first hard crash on the way to the 2nd frog hunt- and you spam spells till you are out, go rest, eat, make more and repeat and get hundreds of thousands of xp by pressing O once per fight.
Personally i dont see the point since i'm lvl.30 and getting lvl 11-16 quests still, i know theres a post game lvl.99 content series of quests but aside from that it feels like folks are ashamed to pick the easy dfficulty but want to steamroll anyway