Quote Originally Posted by Goji1639 View Post
Knowing you have exactly 4GCD's until a mob dies or invulnerability phase starts up is something that will rarely, if ever, happen, but I guess that is one use for breaking combos if you're trying to extreme min/max something.
This is incorrect. When one does a fight enough on a specific job, they learn exactly how many GCDs they can get away with before a boss jumps—or how to time their attacks to maximize uptime. Even people that don’t do “extreme min/max”. For example, in UCoB, I know exactly when I can get away with using Heavy Shot, and when I need to Iron Jaws refresh my DoTs before a Trio so that they are still there when Bahamut returns. And I am far from min-maxing BRD these days. Likewise with DNC in E12S: I know how many GCDs I can get in before the boss goes truly untargetable during Advanced Relativity. This is just something perceptive players pick up naturally the more they do a fight.