%CDR and Flat CDR

Grim Dawn Gameplay Discussion
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I want to know the order the game uses to calculate cooldown reduction on skills. Does the game calculate first the %CDR from items and then apply the flat CDR from mods? Or is it the other way around? If flat CDR applies first then it will make %CDR less effective, right?

I’ll give an example to make the question a little bit more clear. If i have an item that gives a -1 second cooldown to a skill with a cooldown of 3 seconds and i have 25% CDR then the result will change depending on the order the game calculates. If the game applies the 25% CDR first then it will reduce the cooldown by about 0.75 seconds and after that the -1 second is added for a total reduction of 1.75 seconds. If the -1 second comes first then the 25% will be calculated on top of the current 2 seconds cooldown which will result in an additional reduction of 0.5 for a total of 1.5 seconds thus making the %CDR less effective, overall.

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Thanks. This is a very important information for something that i have in mind right now.

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Apparently, something that mad scientist has to do. Spamming some unknown species of skills. :sweat_smile:

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Pretty much. I’m trying to make a themed build around a certain skill that has quite a bit of support, but never gets the spotlight in any build.

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NGL, you’ve piqued my curiosity. Please share when you have it finished!

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If i remember correctly, flat CD reduction (or increase) applies first, and percentage one applies second. So if you want to bring a skill’s CD to zero, you have to do it with flat CD reduction only (or get a 100% cd reduction mod).

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Yep, thats right.
Bringing skills to 0 cooldown would be kinda easy if the order was the other way around.