Ensnaring Arrow vs. Frenzy (Barrage mechanics)

When I attach Frenzy to Barrage Support, I only get 1 Charge per "cast," regardless of multiple arrows hitting my target.

I cannot tell if Ensnaring Arrow is behaving the same way or not. Does anyone already know?

Frenzy does its thing once per attack, and Ensnaring Arrow does its thing once per projectile. So yes, barrage support should get you to 3 stacks quickly.

If you need further proof, try it with multiple projectiles support. Frenzy will give 1 charge no matter how many enemies are hit, and ensnaring arrow will tether all the enemies it hits.

Yep, Frenzy doesn't give more than 1 charge per attack no matter how many targets you hit. I believe there's a helm enchantment to give it a chance to grant 2 charges instead of 1.

Ensnaring Arrow works normally with Barrage. Each arrow will snare the last target it hits, after pierce/fork/etc. It's good for quickly maxing out snares on a single target, but not so useful otherwise.