Poison Damage Calculation

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VValnuss wrote:

I have an attack skill with 1000 base chaos damage and no other damage. No critical strike chance, 100% chance to hit, 100% chance to poison, no increases to poison damage. Then I get 200 damage per second from my poison.

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(1) Now I have 10% increased attack damage. How much damage per second do I get from my poison?

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(2) Instead I have 10% increased chaos damage. How much poison damage per second?

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(3) No longer no critical strike chance, instead 100% critical strike chance, 200% critical strike multiplier, no Perfect Agony allocated. (The hit now deals 2000 damage.) How much poison damage per second do I get?

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Rory wrote:

Your Critical Damage Multiplier will now not influence Poison, Bleeding and Ignite damage, as a result of these ailments no longer being based on the final damage of your hit. Instead, players and monsters now have a property called Damage Multiplier for Ailments from Critical Strikes, which boosts the damage of Ignite, Poison and Bleed caused by critical strikes.

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leptosomatidae wrote:

We have 1000 Physical Damage with an Attack Skill.

1)
And just the Passive Bow Note:
"Master Fletcher"
24% increased Phys Dmg with Bows.
10% chance to Poison on hit with Attacks.
24% inreased Damage with Ailments from Attack Skills while wielding a Bow.

I Hit the Enemy for 1240 Physical(1000*1.24) in the Face.
And inflict 248 Poison(1000*0.2*1,24) over 2Seconds?

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Is Poison an Ailment from an Attack Skill? Like Bleed from Puncture?

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2)
Now we will just add:
20% Increased Global Physical Damage.

Does it inflict 240 Poison(1000*0,2*1.2)or still just 200 Poison(1000*0.2)?

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At which Point get the Physical Dmg of the Attack converted to ChaosDamage?

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A melee physical based attack build using the poison gem will now no longer have their increased melee physical damage bonuses applied to the poison, meaning the poison will be doing significantly less damage. Does this mean that trying to use poison on any build invested in physical damage is not worth the investment?

Technically, those modifiers never applied directly to poison, they only applied to the hit. This then had an effect on the base damage of the poison because that was the final hit damage. Those modifiers will still apply only to the hit, as before, but since the poison is no longer based on the hit's final damage, they won't change the poison's base damage any more.

This means that if you have taken no weapon clusters or supports that benefit the poison damage, the poison damage will indeed be lower. However, in the Beta, many weapon clusters will have large modifiers to Bleeding or Poison damage on them, in addition to their other effects, so you will have some natural increases to Bleeding or Poison Damage by directing yourself to those clusters, while still increasing your physical hit damage.