I just mostly forget it exists 99% of the time. I just can't react fast enough to make it work, and the game doesn't ignore the area the character you're rescuing across. It feels like an ability that was not tested in higher ping.

Personally I would suggest a replacement like "Shell" or something, being a sheild that makes you near invincible for a couple seconds (90% defense buff?) every 5 minutes. Things guaranteed to kill still will, but it'd let players endure the bad stuff, has no troll potential, and has other utilities.