Frostbite Freeze Formula?

The example given in the guide makes no sense to me. It says that each frostbite stack gives 20% increased chance. In their example they say the hit has 10% chance and the target has 4 stacks, which gives 14% total. 4 stacks means 80%. How in the world did they get 14% from 10 and 80? Sensible conclusions would be 18% (80% of 10 = 8. 8+10) or 98% (1.1 x 1.8). Thanks for any help you can give!

It’s multiplicative from the base chance, not additive from 0%.

10% + 20% of chance (2% * 4) should be 18%, and then factor in resistances.

So the in-game guide is straight up wrong?

Yes, it should be 18, not 14.

The formula, in this case, would be:
10 + (10*0.8) = 18.

Reading over the in game guide, 20% is not factored into their example.

10% base x 4 stacks at 10% application = 14%.

The guide is pretty exhausting when you look at ā€œfreezeā€ instead of ā€œfrostbiteā€.
Basically:
freeze_chance = (freeze_rate * freeze_rate_multi) / (target_health + target_ward) with bosses having 50% more health in calculation.

Skill with freeze_rate = 40 and freeze_rate_multiplier = 500% would have 2.4% chance to freeze an enemy with 10000 health and 0 ward. (40 * 6) / (10000 + 0) = 0.024

Adding 3 stacks of chill, with each giving 50% increased chance to freeze we get: (40 * 6 *2.5) / (10000 + 0) = 0.06, so 6% chance to freeze.

Then adding 15 frostbite, which is a multiplier on top of the aforementioned formula: ((40 * 6 *2.5) / (10000 + 0)) * 4 = 0.24, so 24%.

In case its a boss we multiply health by 1.5 (beacause 50% increased life): ((40 * 6 *2.5) / ((10000 * 1.5) + 0)) * 4 = 0.16, so 16%.

Scratch that

As we can see the freeze chance is influenced by enemy health and ward, which is not mentioned on frostbite page in game guide, so honestly, its hard to say whether the guide is wrong, or simply not precise enough.

The guide page for frostbite is actually wrong. Frostbite applies at the very end of calculation, and give 20% per stack, so yeah it should be 0.1 + (0.1 * 0.8) = 0.18, so 18%.

Taking all of this full formula for freezing is: freeze_chance = ((freeze_rate * freeze_rate_multi * ((numer_of_chill_stacks * 0.5) + 1)) / (target_health + target_ward)) * ((number_of_frostbite_stacks * 0.2) + 1), where number_of_chill_stacks must be less or equal to 3 (max number of stacks) and number_of_frostbite_stacks must be less or equal to 15 (because only first 15 stacks increase freeze chance).

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Thanks everyone for that clarification, especially @TaurusHORN for that in-depth break-down. I want to let EHG of this error. I think misleading guides are very bad. Do you think I should post in feedback or bugs? Thanks again.

If you are playing online then best way would be to use ā€œreport a bugā€ feature in game menu. Otherwise, Bug Reports should be the place.

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Okay, thanks!

Another important takeaway from this is that Frostbite can’t actually freeze the enemy, because the ailment doesn’t have a base freeze_rate, right? So you need another skill that has a freeze_rate to actually apply the freeze effect.

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100% correct.

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