[2019] Am I going nuts? Flicker bug, maybe...

I'm using flickerstrike with ancestral call + multistrike + damage.

I have effigon and stone aura, which should mean i always hit everything.

I keep flicking around on mobs and hearing the 'whoosh' missing sound and stuff isn't dying as fast as it should be.

Is this a lag thing? or some weird interaction that i'm missing...