Fey Light in FCoB

[Menae]

:Facepalm:

Haste affects GCDs/min not efficiency. TP costs are not altered therefore TP efficiency is fixed on only differs from job to job and their respective optimal damage rotation. In a vacuum, differing gcds all other factors constant spending, 1000 tp in 4 min vs. spending 1000 tp in 3min followed 1 min of doing absolutely nothing would result in the same exact Dps.

Edit: and what the heck are DPCTP and DPTP?

What PBC (PandaBearCat) is saying is that since your most TP efficient abilities tend to be DoTs of fixed durations that aren't impacted by haste, as your haste increases these abilities become smaller proportions of your damage. This is fine if you don't run out of TP, because you are still using them as often as possible. However, if you DO run out of TP and have to delay them to wait for a TP tick, you are losing damage that you wouldn't be if you hadn't TP starved yourself. Theoretically this shouldn't happen (because you can just slow your pace down to your unhasted levels), but if you hit a button every time you can and as a result run out of TP, it's a possibility.

DpCT is short for Damage per Cast Time. It's how much damage something does versus how long it takes to execute. Holy (200 potency) does more damage than Stone II (170 potency) to a single target, but because Holy takes 20% longer to cast and only does about 17% more damage, it's less DpCT to a single target. (This is just an example because I know the potency and cast times off the top of my head, please don't Holy single targets without a damn good reason) For any ability which is instant but on the GCD, you use your GCD as the cast time, because that's how long it locks you out of doing other stuff. There's a little more nuance in here for off GCDs and abilities which animation lock you, but the basic idea is damage per time spent executing. It's not quite the same as DPS because some abilities - DoTs - have way better DpCT than they do DPS. If I do 1 damage per potency, and a DoT does 300 potency over 10 seconds, it's only 30 DPS but 300 DpCT.

DpTP is much simpler. It's just damage per TP spent. An attack that does 200 damage for 100 TP has better DpTP than one that does 400 damage for 400 TP.

[Menae]

Let's put it this way:

I'm a Ninja. I Mutilate x number of times over a fight. Mutilate costs 80 TP.

You are also a Ninja in my same party. You run out of TP a few times over the course of a fight, so you get off 2 less Mutilates because you are waiting for TP ticks and can't reapply it right away, and of course you don't want to clip it because that would be dumb. This means you spend 160 less TP on Mutilate, but since we are in the same fight and swapping Goads like the awesome Ninja brethren we are, that means you have 160 more TP for other, non-Mutilate things. What do you spend that 160 TP on that gives you as much damage as 2 Mutilates do?

The answer is you don't, because the Ninja doesn't possess any attacks that both cost TP and do as much damage per TP spent as Mutilate. It's not just how much TP you spend, it's what you spend it on. That is why in practice haste can lead to a dps loss, because you use too much Aeolian Edge and not enough Mutilate.

I say again, theoretically and even in practice with merely decent play, haste is a DPS increase or at worst neutral. But to say spending 1000 TP in 3 minutes is the same as spending 1000 TP in 4 minutes, or to say it doesn't matter when you spend it, is to neglect the fact that some abilities are limited more by time than they are by TP.