Adding a quick note as I went on my first, full spell based hunt today alongside an empath. I had 1 failed cast due to hinderance and used a combination of 1603, 1615 and 1630 throughout the hunt. I remained at must rest through the entirety of the fight then went to go turn in my bounty and dropped to numb much more quickly than I thought I would. It looks like either the exp is somehow absolute dog trash for us using spells as a main source of attack, or, we're simply not capable of dishing out enough damage to fry ourselves properly.