ToGC, hard hitting bosses don't have parry haste. Also most of the mob's attacks ignore avoidance.
Gear more stamina is the singular solution. And when I say gear more, I mean NO SOCKET BONUSES, and start replacing defense enchants with "inferior" stamina enchants, as long as you are staying uncrittible. You should basically have 1 purple gem, and everything else Solids. Stamina on Hands, Stamina on Shield, Blood Draining on Weapon, Stamina on Shoulders, Stats on Chest, Armor on cloak. Anything you can sacrifice without becoming crittable.
EDIT: Looked at your Armory, your Stamina is impossibly low for ToGC. 32k HP? Wow. Also two of your items have no gems or enchants.