How does Self-Care healing Speed work?

I've been thinking of running a build around Self-Care that is trying to undo the healing speed downside but I'm a little confused as to how it works? Is the "50% of normal healing speed" multiplicative or additive like movement speed.

Is it...

Additive = Base Healing Speed + Botany Knowledge - Self-Care l 0.83 = 1 + 0.33 - 0.5

Multiplicative = Self Care(Base Healing Speed + Botany Knowledge) l 0.66~ = 0.5(1 + 0.33)

Comments

  • Increases in speed are additive, decreases are multiplicative. With base speed being 1, this is how you do it:

    (1-0.5)*(1+0.33)

    Then you divide the base time (16, in the case of healing) by the result of the expression above.

    If there are many decreases, you do it like this:

    (1-decrease1)*(1-decrease2)*(1-decrease3)*...

    And if there are many increases, you do it like this:

    (1+increase1+increase2+increase3+...)

  • @Orion said:

    Increases in speed are additive, decreases are multiplicative. With base speed being 1, this is how you do it:

    (1-0.5)*(1+0.33)

    Then you divide the base time (16, in the case of healing) by the result of the expression above.

    If there are many decreases, you do it like this:

    (1-decrease1)*(1-decrease2)*(1-decrease3)*...

    And if there are many increases, you do it like this:

    (1+increase1+increase2+increase3+...)

    Thx. so in order to undo self cares negative, you have to have +100% healing speed

  • @VenomousHawk86 said:

    https://forum.deadbydaylight.com/en/discussion/comment/1769516#Comment_1769516

    Thx. so in order to undo self cares negative, you have to have +100% healing speed

    Indeed.