Helm crit bugs? help or explain.

please somebody explain me...im on PF, poison...so i have 3 helmets on 400-500 es. helm № 1 just es...equip/of nothing change. helm № 2. same but with crit chance 30, my crit +3% but dps -5k...helm № 3 same but crit 23 % +2.3 crit chance dps +3k...so what TF is goin with those helmets and crit..why some of them looks like bugget and dps goin down..when others same dps goin up...how +23% crit chance give +3k dps and 30% crit chance give -5k dps...rest is same

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seaman#4993 wrote:

Show your character and helmets. It's hard to tell with such limited information.
Perhaps the second helmet also has strength or life, and you have "% increased Damage on full life" passive.

all 3 same.. as i said...some with double rarity some with 1 rarity and crit..all same 500 es 36 rarity double res. 500 es 18 rarity 30 crit chance. double res. 500 es 18 rarity 23 crit chance double res. 1- change nothing. 2- +3 crit -5k dps. 3 +2.3 crit + 3k dps. and its not first time i see this..some helmets with crit chance give dps some goin - dps. i play default pf crit poison build. https://poe.ninja/poe2/profile/Impos27-6450/character/ImposPF
i dont have any for +- dmg even if i change es/hp etc. its bug..but i dont get why/how