Venom Arrow supposedly interrupts skill use and stuns but I hear it doesn't work right. Poison Injection says it increases DoT on targets under 35% health but doesn't say by how much.

I used Poison Injection in beta and I could never tell if did more DoT damage vs low health targets, and I never knew if the damage increase would trigger if the DoT was already applied and ticking when the target reached 34% or below or if I had to fire a new arrow for the increase. (IE the target is at 40% HP, I hit it with Poison Injection arrow, 3 seconds later it's below 35% and so has 7 seconds of increased damage DoT).

Is Poison Injection increased damage really low? Granted I was low level when I used it so a small increase to something like 30 damage over 10 seconds is a really low increase. Maybe it scales much better at high levels but I couldn't see a difference whatsoever, in PvE or Cyrodiil.

Didn't use Venom Arrow but people are saying it's not interrupting or stunning correctly. May not be worth morphing into a skill that doesn't do what you want it to do.