Two things i died when i fell in lava with full quantum gear on(fully charged) and i was taking 2 hearts of damage from enderman(p.s. also take damage from everything now) when your supposed to be nearly invincible in quantum. Also there are fall damage sounds when in quantum boots. Did that change or is this a bug?
I experience these problems too. even full set of bronze armor gives better actual protection (quantum set take 2 hearts of damage from zombie while bronze takes a half heart. creeper explosion takes almost all hearts (around 8-9 hearts) while wearing quantum set