It’s related to this version 2.4 to 2.5 or so. Since stealth cooldown is extended as well as the fact that stealth needs at least 50% dodge to be functional. PermaStealth nowadays needs 40 stealth and 60% reduced cd to get close to it or more as well as the easy dodge investment.
Although another way as @fudgenever10 done it is by using deadly arts and deadly strike so whenever you do use stealth even if sparingly, it’s always ready for you thanks to fast firing arrows and deadly strikes. Then the dodge for the stealth and 20 or so hero points in stealth.