Flicker Strike Still Buggy

I haven't played flicker strike for a few Leagues because I remember it being a laggy mess. My internet works fine but the skill would just bug out and I would teleport around without actually making contact with the monsters. I would have to leap slam then use the skill again until it would make contact. I played it again this season and it's doing the same thing. I think Multistrike + Flickerstike makes the game lose it's mind. Is this a know issue or am I the only one having this issue?