[PF1, SoP] Is this an Instantaneous effect?

[Dr_Dinosaur]

Question about the Spheres of Power talent Energetic Affliction from the Destruction sphere specifically, but also for similar effects that may exist elsewhere.

Energy Affliction has no duration and doesn't require concentration, but forces a save to avoid damage each round until the target succeeds. So is it Instantaneous or not?

[nighteyes95]

Directly off the wiki.
"The effects of an Energetic Affliction last for 1 round per caster level, or until the target succeeds on two consecutive Fortitude saves against it. Alternately, an afflicted target may attempt to stifle the energy with a full-round action, which allows them to make a Reflex save with a +4 bonus to end the effect immediately."