It's probably the number one complaint from the Killer side and rightfully so. There is no downside to this perk. It turns every chase into a 3 hit down. Hitting a skilled Survivor three times in a reasonable amount of time requires meta gaming on the Killer side or GG.
It needs a sublte nerf, I've been thinking about "Broken" status until you go down. At least this way if the Killer does give up chase, you will remain injured for the rest of the match essentially. If the Killer later picks up chase on you again, he won't have to three hit you again, only two.
It adds a slight negative effect which is better than nothing.