Originally Posted by
Cosmophile
As far as how I am getting an uptime on my Shield Block that is >50%, here is what I've come up with:
My Haste: 5.82%
Shield Block Cooldown: 12s
12s X0.0582 = 0.6984 second reduction
12s-0.6984s = 11.3016 second Shield Block CD
Shield Block Duration = 6s
6/11.3016 = 0.5308 -> ~53.1% possible uptime on Shield Block, given my current Haste rating. Ideally, this number would be lower, as I'd love to not have this much haste on my gear.
Edit: All of this math being said, I don't at all remember hearing of Shield Block being affected by Haste, so this is probably one of those rare cases of a pure mathematical coincidence. :P