Bard Question - When to use Straighter Shot Proc?

[ElysianNeema]

Hey all,

I've just been messing around with the Bard for awhile and came across the question of when is it the best time to use straighter shot proc?

Right now, I am saving Straighter Shot Proc for these situations:
1) When Empyreal Arrow is about to come off cooldown.
2) When two oGCD's are about to come off cooldown.

Why?
Because of the 2.5ish downtime after a straighter shot proc. So, Is it worth it to use SS Proc right away? Or to simply save it to prevent DPS loss?