I don't know about that. Repel likes to flat out bug and not hit you at all or it'll hit you "late" well after the cast has finished. Quite surprising when you're dodging the void zones and then suddenly go flying off the platform. I know Stoneskin will absorb and prevent the knockback, but all of the times it "missed" me or hit me late, I didn't have SS up anyway. I isn't a latency issue either since the void zones cycle like clockwork even if Repel is screwing up.