After noting that players heavily preferred to level in Nightmare Incursions, instead of exploring Azeroth or running dungeons, an attempt to promote these other methods has been made. The experience from Incursions has been significantly nerfed — from roughly 7000 experience per quest all the way down to 3000 according to a recent Reddit post.
Despite the hopes that buffing Discoverer's Delight from 50% to a new 75% would make the two methods roughly on par, this change does seem to have hit Incursions particularly hard, potentially dethroning them as the fastest leveling option.
Players looking to dungeon level now should remember to pick up The Wild Gods at 40 so they can begin farming Wild Offering as soon as possible, easing the dungeon grind a little at max level.
The new changes look to mean roughly 60% less experience from Incursions, while increasing the experience from 40-50 from other methods by 16% overall.
Visit our Dungeon Grinding GuideNightmare Incursions Overview Guide