PoE Duelist Ascendancy, Hex builds

Ive seen lots of builds talking about how the new Tainted Pact amulet, which gives "chaos dot heals you while leeching life" is not working properly, or how its inconsistent and people keep dying when their leech ends. Im currently playing a Impending Doom Scion, which seems to be working decently with it; it doesnt die to lack of leech and has decently sized poisons, its nothing fancy or expensive but it feels very resilient while taking damage from packs of mobs, or tanking boss mechanics while attacking, and i havent even invested much in defenses. This build does T16 rare maps with ease a