
Originally Posted by
Karbuncle
Except a DNC isn't required to cap haste =.=a. (I think!)
With Dual Wield being considered in the absolute Delay Reduction, Jobs like NIN, THF, and DNC (ones described) in reality only need about... I can't remember the exact number, But 25% gear haste/+Spell+ Double March should cover that to cap their Delay Reduction, no DNC Required. (This isn't even including Blitzers roll!)
I know Capped Haste from gear is 25% (26% is the Shown Number, You only get 25% in reality its just 26% is required in shown numbers because how its caculated... blah blah), 43% in magical.
That in itself is 68%, I think Dual Wield would cap the rest. This is of course excluding 2handed DD, minus DRK, who can cap JA haste with Desperate Blows.

Originally Posted by
Leonlionheart
I think DW would only cap it on NIN? I'm really confused as to how DW works in conjunction to haste, considering NIN's base trait is 35% (IIRC) and that with Gear Haste would be 60% already, making Haste get it to 75%. AF1 body is 5% DW, which would cap it.
However any NIN that's played with a BRD knows that March breaks your swing animations @_@
68% haste requires 37.5% DW (Edit: because they are multiplicative [you have to * them not + them])
69.3% (rounded) haste is required to cap at 35% DW (naked NIN)
71.5% (rounded) haste is required to cap at 30% DW (naked DNC)
73.333333333% haste is required to cap at 25% DW (naked /NIN)
The closer you get to cap, the less DW is affecting you. Magic cap + fully merited samba means there's no point in equipping any DW gear because you're already capped. regardless of 25% DW or 50% DW (not sure how much a NIN or DNC can actually achieve), however, drop the haste samba and a NIN only needs 2.5% DW to cap haste. DNC needs 7.5% and /NIN needs 12.5%.
The maths is in the Spoiler so as to not clutter the page up:
Decide on which you want to decide: DW or Haste (the one you don't already have a set value for)
In this instance I'll start with a known DW figure and show you how to work out how much haste you need to cap.
as /NIN you have 25% DW naked so we'll go with this.
% are shown as a decimal, so 25% = 0.25
x=your DW figure
a=the amount of haste you need
you can use exactly the same maths to work it out the other way round with x = your known haste if you want to work out DW required, which will than = a
1-x=y
1/y=z
z*0.2=b
1-b=a
so in our example:
1-0.25=0.75
1/0.75=1.3333333333etc
1.3r*0.2=0.2666666666etc (ending in a 7)
1-0.26r=0.73333333333etc
so, 73.3333333% haste required (74%)
Hope this helps you in the future. I had to read the haste thread on here for about 2 days to fully understand it *_*
So a big thanks to whomever it was that posted that info for me (and strangely, I thought LLH was one of them?!)