When you have the mage talent arcane instability, which is a 1-3% spell DAMAGE increase..ECS adds a 1-3% increase to our spell power (depending on how many points in the talent)
and shows that value. There is a difference between the two i believe? A 3% spell damage increase does not just flat raise our SP by 3%?

Classic Anniversary Server - Doomhowl

Hey @Spiritshroud08 sorry for the late response on this.

I am not sure what is correct here tbh 🤔

Since Spell Power is not a flat +DMG on all spells, you are most likely right. Arcane Instability reads like a flat 1-3% +DMG bonus.

So I guess removing the effect of Arcane Instability from Spell Power in ECS would be correct.