How did it cause stress to the healers? Damage in end game fights is predictable. If you have 20k and brought down to 10k, vs having 17k and brought down to 7k, you've lost the same amount of HP and need to be healed for the same amount of HP. All you're doing is leaving DPS on the floor.

Having said that, if you're DYING from mechanics then you need more VIT right side, obviously.