peddroelm

I keep noticing grazes with elemental spells that do more damage than they should. For instance, I just saw a Chill Fog graze for 15.9 damage before DR, when the stated damage on Chill Fog was 16-23 (base 12-18) and I had only Secrets of Rime to boost the spell (character level 2). This is true across multiple characters and playthroughs.
 
One possibility -- the only one I can currently think of -- is that the 20% boost from elemental talents is fully applying to grazes instead of being halved.
why would it be halved ??  
 
Base_Roll *(1 + 0.2 - 0.5)  <> Base_Roll * (1 + 0.2 ) * 0.5 
 
additive <> multiplicative
 
(hit quality damage mods are additive for weapons and most spell damage calculations  -- only one case I'm aware of them being multiplicative for the protagonist AOE burn drain ability)