Diablo – How does 50% extra xp weekend stack with other bonuses

diablo-3

Blizzard is doing a +50% xp weekend in Diablo 3, and I'm wondering if and how it stacks with the other xp bonus' from difficulty tiers.

On Expert

  • Additive:
    • (1+difficulty+.5)*base
    • 1k xp monster in normal now equals 2.5k xp
    • Net gain = +150%
  • Multiplicitive:
    • (base + .5*base)*(1+difficulty)
    • 1k xp monster in normal -> 1.5k xp with weekend bonus -> 3k xp on Expert
    • Net gain = +200%

the quantifiable difference really becomes apparent at higher difficulties:

On Torment IV

  • Additive:
    • (1+difficulty+.5)*base
    • 1k xp monster in normal now equals 9.5k xp
    • Net gain = +850%
  • Multiplicitive:
    • (base + .5*base)*(1+difficulty)
    • 1k xp monster in normal -> 1.5k xp with weekend bonus -> 13k xp on Expert
    • Net gain = +1200%

As players it is definitely to our advantage if they are using multiplicitive bonus instead of additive. Does anyone know which Blizzard is using?

Best Answer

These are the numbers taken from the game interface with

Community event Buff - Your experience gain is increased with 50%

On N  0%    bonus ->   50%   Bonus Experience
On H  75%   bonus ->  162,5% Bonus Experience
On E  100%  bonus ->  200%   Bonus Experience
On M  200%  bonus ->  350%   Bonus Experience
On T1 300%  bonus ->  500%   Bonus Experience
On T2 400%  bonus ->  650%   Bonus Experience
On T3 550%  bonus ->  875%   Bonus Experience
On T4 800%  bonus -> 1250%   Bonus Experience
On T5 1150% bonus -> 1775%   Bonus Experience
On T6 1600% bonus -> 2450%   Bonus Experience

So on Normal: 1000 Exp becomes 1500 instead of 1000 (50% total increase)
So on Hard  : 1000 Exp becomes 2625 instead of 1750 (50% total increase)

Im not gonna do that math for the rest but I assume they are either perfectly correct or close within a rounding error of being correct.

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