Quote Originally Posted by MythToken View Post
Clipping is the devil, you are literally cutting the potency off of your Dot. You are also losing opportunity cost that you could be casting another damaging ability.

It would be better to let them drop off completely and reapply, than to clip.
As Seravi said, it's not. If it's below 3 seconds, you're golden since DoTs tick on a 3 second "timer." Chances are your full potency has already gotten off and you're refreshing for the new potency