Dontmindme

I think I've found an error in the formula for cooldown proc rates. One factor has been left out. That formula is true if at the instant the cooldown ends, you have your next attack. You are missing a factor.

Correct formula should be:

U = D / (c + 1/2v + 1/vp)

where 1/2v = your average time until your next attack

Technically, if one were to assume all attacks come exactly as clockwork (including haste rates being constant), this factor would be different, but given we are taking into account averages (and your attack times shift somewhat with Haste and variability of instant procs), 1/2v is probably more accurate for what we are looking for.