Most pyromancers are putting 15 points in enchant fire to increase the damage on other pyro skills, but looking at the formula on tos.neet (https://tos.neet.tv/skills/20103) seems like just the extra attack line scales with skill level, the additional fire damage only scales with magic attack.
So it wouldn’t be better putting only 5 points in enchant fire to get 100% uptime(unless you are full support)?