[Multiple] Haste % calculation

[Dreadblade]

Yes, he has 41,67% haste with 3115 haste rating (7,33% haste). It appears to be the same on Freakz though. And I don't think Unholy Presence is to blame since it only grants 20% additional haste

[Whyplashh]

As you show in the pics, DK's are not affected by this, but warlocks / mage / druids / priest / warrior / rogue / shamans / monks (?) are.
The way that haste raiting is added from items makes it so you end up with 2 - 5% more haste than you should at that raiting. Also the 5% haste aura, has the same problem it gives you more haste as you have more haste raiting. For exemple for me at 11700 haste raiting it gives me like 6.5% haste.

P.S. or maybe your haste raiting is to low to see the diference, try and make exactly 41. 67 and see if it is at 3115 haste raiting or less.

Update @ 05-04-2016, 17:24:26

@Dreadblade Do you need more proff to put this at confirm?

[Dreadblade]

We need to know exactly which classes are affected by this bug and which are not. Also I believe that the haste auras should stack multiplicatively. Take a look at this, for example:



Without Frost Armor the mage has 23.03% haste from gear.

If we add 7% to 123.03 we obtain 131.6421, or 31.64%, which is exactly as much as it's shown in his character sheet

[Scott]

Well for warriors the benefit of Haste from items and consumables is increased by 50%, maybe from here is the bug...

"The benefit of Haste from items and consumables has been increased by 50% for all Warriors." - http://us.battle.net/wow/en/game/patch-notes/5-2-0

[Whyplashh]

The ideea is that you shouldn't see a different from the %haste at black and the %haste at red without any haste aura on you.


Update @ 05-04-2016, 17:44:06

And for confirmation for all the classed and I can't do that, because I don't have acces to so many characters. I can say CONFIRM for warlocks and priests. and Tractoriu did CONFIRM for warrior. If a GM would be so kind to make every class and equip itemes of 520+ ilvl to really see the difference, would help alot. You just have to see the difference between black an red, without any haste buffs on you. (difference that should be 0%, except Goblins that have 1% racial)

[Whyplashh]

So I've spoken with different persons on different classes and they all say the bug is valid, and it seems the bug is from 4.0.6 but because only now reaching haste raiting values high enoght you can see the difference. at SoO gear probably you will be able to get the %haste of 20k haste raiting at 16k raiting, with is a big buff. I put 3k haste raiting on my lock and the different is miniman like 0.06%, so probably that is why it seems to be fine on your DK, but the problem exist and it is general, and needs to be fixed because is a big buff.

[Dreadblade]

I retested it and it affects ALL classes. At some point you start gaining more haste % for every item equipped. As an example, you equip an item with 500 haste, you gain 1% haste, you equip yet another item with 500 haste, you gain 1.2% haste.

[africa]

Haste rating stacks additively with itself , but here it stacks in a multiplicative manner.
What I mean is that instead of adding 100+100 and then dividing by 425(1% haste) to get the real haste %, it divides 100 to 425 and then it multiplies one with other.

Example:

How is should be:

item1 850 haste
item2 425 haste
item3 1275 haste

Haste% = (850+425+1275) / 425 = 6%

How it is:

item1 850 haste
item2 425 haste
item3 1275 haste

Haste% = (1+850/42500) * (1+425/42500) * (1+1275/42500) = 6.11%

Note: 42500 = 425 rating for 1% haste and divided by 100(to get it to %).


The current formula applies to all rating, gems, enchants, buffs. The more haste rating you stack from different sources, the greater the gap becomes.