regarding the “increased Armor Shred Effect” affix, let’s start with a quote from recent patch notes:
Protection Shred ailments have been changed to equivalent Resistance Shred ailments which reduce the respective resistance by 5% against most enemies and 2% against bosses and players. Armour Shred works the same way. Shred ailments now have a maximum of 20 stacks.
This would lead to a 40% increase against bosses (2% x 20 stacks).
Where does “increased Armor Shred Effect” comes into play?
Assuming you have 100% increased Armor Shred Effect, will it bring the 2% per Stack to 4%?
Will it amountwise “bypass” the 20 stacks cap? (4% x 20 stacks = 80%)
There is no tooltip or further explanation for armor shred… Maybe one of you can clearify?