Haste buffs not matching

There seems to be an issue with some of the external haste buffs and I imagine it’s been an issue long before 9.2 began. I went on my disc priest to test PI because I didn’t believe it actually gave me the 25% haste increase like it states it provides, and my percentage ended up increasing by 27%. After I noticed this, I went on my main, fire mage, and wanted to test the Time Warp (30%) haste increase to see if it would actually give me the 30% or if that percentage would be off also. The first time I used it, it gave me a 40% haste increase with nothing else proc’d that I noticed. I told a buddy and he told me to try it again with all my gear unequipped and when I did that, it gave me the flat 30% haste increase. That leads me to believe it’s something to do with my gear. Here is my current gear on my fire mage who I was testing the Time Warp buff on:
278 Cocoonsilk Cowl
252 Sin Stained Pendant Socketed +16 Haste
262 Castigator’s Mantle
278 Blighted Margrave’s Cloak
259 Sinlight Shroud
262 Deathshackle Wristwraps Socketed +16 Haste
278 Erudite Occultist’s Handwraps
265 Cord of Unity
259 Dealic Deterrent Stockings
246 Slippers of Leavened Station
262 Death God’s Signet
291 Shadowghast Ring Socketed +16 Haste
255 Cosmic Gladiator’s Badge of Ferocity
255 Unbound Changeling
262 Fleshcrafter’s Knife Enchant: Celestial Guidance
262 Nathrian Tabernacle
I don’t know how to upload screenshots from my testing to show, or if that’s even possible so sorry about that.

Does anyone notice them having a similar problem with haste buffs like Time Warp, PI, troll racial, etc. or have ideas as to why they appear to be giving the wrong amount of haste?

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Haste has Diminishing Returns after a certain point, as do all stats.

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From what I remember reading, you dont get diminishing returns from timewarp/lust since its a flat percentage gain but you do get it from procs from like trinkets since those are specific amount gained. I’m pretty sure Power Infusion should fall into the BL/TW category since its a flat percentage, if not they either have a serious bug, or they need to update their definition of flat percentage not getting DR to specifically lust buffs.

This doesn’t happen with hero/lust as that’s a raid-wide buff, that’s understandable. Punishing someone because their spec’s best stat is haste by not giving them the same bonus from a raid buff would be silly. PI is a personal buff, even if it’s on someone else.

The DR is also applied to Torghast powers and such that give a % bonus.

Haste buffs multiply. ((1 + (your haste / 100)) * 1.25) - 1) * 100

Here is what I googled up about DR:

This penalty is as follows:

  • From 0 to 30%, there’s no penalty.

  • From 30% to 39%, there’s a 10% penalty.

  • From 39% to 47%, there’s a 20% penalty.

  • From 47% to 54%, there’s a 30% penalty.

  • From 54% to 66%, there’s a 40% penalty.

  • From 66% to 126%, there’s a 50% penalty.

  • You can’t get more than 126% from gear rating.

They changed them in SL so if you are still use to expediential scaling may answer some stuff.

Do your hips really not lie? :face_with_monocle:

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