Experimenting with the Max Focus Reduced plague, the bar shows always shows your Max Focus as 100(numerical) but the actual max focus you can accumulate will be less than 100. I am using baseline 10 focus as a stat. Because it always shows as your actual max focus as 100, the 60% at Max Focus does not trigger.
The calculation is also incorrect.(See Edit)
At Max focused reduced by 18%, max focus is 71.
Max focused reduced by 24%, max focus is 61.
Max focused reduced by 19%, max focus is 69.
Max focused reduced by 22%, max focus is 69(???)
Edit: I was using 60% increased if only elemental gem when initially testing. I did not expect plague stats to also multiple when the interface says “Enchantment Power”.
When I changed gems to 60% at max focus, the actual max focus was correct, but the interface still showed as 100. Also, when at max focus, the enhancement did not trigger.
So no matter what, your max focus is 100?