Dungeon runs appear to be one of the primary sources of resource grinding. When re-running dungeons, the pre-dungeon run interface gives the player the option to select a difficulty. However, this option appears to be currently disabled. As a result, the base difficulty of a dungeon currently scales with the player’s level, resulting in situations where the Chapter 1 dungeon has gear scores at absurd levels (mine is currently at 300+).
Ironically, this makes the optimum tactic to be raising a 2nd character, giving it the overpowered gear from the first character, and farming the dungeon while the 2nd character’s level is still low (rewards are not tied to player level, but to the dungeon itself). This surely cannot be intended behavior.