Cast on Critical Reservation

Cast on Critical reservation is 91 spirit with 20% gem quality. I am not sure it is right calculation of reservation efficiency.
Last bumped on Sep 29, 2025, 4:07:32 PM
100 / 1.1 = 90.9 ≈ 91
But why it calculated like this ?
If Player have start reservation efficiency multiplier equal 1, so why quality on CoC gem is increasing player multiplier, not decreasing gem multiplier ? I really think 10% increase on gem means 100*0.9 .
But your version surely make sense.
Thank for help
In 0.3.0 the "reduced Reservation" mods were replaced with "increased Reservation Efficiency" mods, which have a different calculation formula.
https://www.poe2wiki.net/wiki/Efficiency
Got it, thanks

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