The light gain from feeble from random mobs either gives 1% light or gives *no* light.
Mutations gives 1% OR gives no light, before it used to give more but now..its like a hit or miss.
Adaptions seem to only give one or two people outta our 8 person group light, the rest are S.O.L
The only good thing that happened is NM's gives tons more light and challenge logs give more XP, the rest seems broke.