It can be maddening at times to take a rescue mission, and the NPC(s) that you rescue lose track of you, if you take more than three steps, making you have to continuously go back to re-establish the "green name" link. Whereas, in other missions, the NPCs will have a crazy strong link, and follow your toon through leaps, wide gaps, and over uneven terrain. Why is this, and what can be done to fix it, i.e., make the mechanic strong across the board?