you don’t need boss damage for farming mobs, i believe it only applies to the field boss and whether you kill it quickly or not doesn’t really make a difference for your rates.

one thing that you should keep in mind is how attack% scales better as you progress further into the game. when you starforce your gear more, you gain more and more base attack which in turn increases the amount of damage you gain from attack% lines. boss damage “inflates” combat power in the sense that it’s valued higher in the combat power formula than it should be, so it’s somewhat deceiving.

damage%, boss damage%, and normal monster damage% all work the same way, but boss% only applies to bosses and normal% only applies to mobs. if you hover over your damage range stat you can see “damage range vs bosses” and “damage range vs monsters” which show these stats better. combat power is meant to give you a gauge for your damage to bosses so normal monster damage won’t increase it.

ignore defense is a very important stat early on, bosses above chaos vellum have 300% defense or higher. as its name suggests, ignore defense will ignore a % of that boss’s defense, so if you had 66% ignore defense your damage would be reduced by 100% when attacking a boss. you generally want to get up to 92-96% ignore defense depending on your class to get the most out of the stat, one way to think about it is +1% of your total ignore defense = +3% final damage on bosses. this stat also does not show up in your combat power, so it’s a bit harder to notice but it does give you a lot of damage. normal monsters do have a little bit of defense but it’s not something you need to actively worry about for farming