Guild Wars 2

Is staff a viable ranged weapon for chrono pve, and what spec should i run?

Open world – sure.
Instanced – damage is too low.

I find hybrid power/condi does a lot for staff damage, and the iWarlock can still crit big numbers given the amount of conditions you can lay on a target.

Depends on what you mean by “ranged”. Staff is best used at under ~600 range because that’s the range of the bounce. Farther than that and it’s much less effective.