Umbral Mods don't appear to add up correctly on tau resistance

[Melon_Wizard]

with all 3 umbral mods equipped they say they give 19.3% tau resistance each, but the side bar where it shows total tau resistance says it's only 47.3% (19.3% x 3 (for each mod) is 57.9%).

unable to test if this effects actual interaction with the game

[----Legacy----]

5 hours ago, Melon_Wizard said:

with all 3 umbral mods equipped they say they give 19.3% tau resistance each, but the side bar where it shows total tau resistance says it's only 47.3% (19.3% x 3 (for each mod) is 57.9%).

unable to test if this effects actual interaction with the game

Iirc, DE changed the way stacking damage calculations works by adding diminishing returns to it.

Now instead of the formula you mentioned (100-(19.3*3)), the formula applies only one of the dmg reductions over total damage and subsequent ones over the remaining damage.

Now it's basically:

100-19.3% = 80.7%-19.3% = 65.12%-19.3% = 52.56% -> 100% - 52.56% = 47.44% damage reduction (there's some errors due to rounding, but i hope it helps to clear things up)