Stalker Staff Fighting bugs

[Psi]

Assassin's Staff, when used from hide, takes about one second between the animation playing and the damage catching up. This means you're out of hide and vulnerable to damage from that enemy before the damage hits and they're defeated.

 

I'm unsure if Build Up rooting you in place is a theme with other weapon sets, but the requirement of drawing the staff when activating build up causes the animation to root you, and this seems like poor design on an AT that needs to be as mobile as possible, especially while on teams when you need to position yourself next to high-priority targets on the fly. Not to mention it just plain doesn't feel good to stop running while you pull the staff out; not an issue for any other attack in the set that also has to pull the staff out.

[ZorkNemesis]

For the second part, weapon sets with Aim/Build Up tend to cause rooting so it's not exclusive to Staff.  Archery's Aim has the same issue where it roots if you have to draw the bow and I want to say Battle Axe's Build Up also does it.