I think buffing yourself up with buffs from a NPC takes a long time. Everytime you get a buff you exit the menu and have to target the npc again and go through the menu again if you want another buff. While playing with 1080p resolution, only having 3 options viewable at the same time really gets crammed.
If you were like me, you never bothered with getting buffs from campaign because of the menu is a nightmare to navigate plus constant "Event skipped" messages.