Yes i have the same problem, the only thing the spell does is give my screen a blue glow and drain my mana, other than that its pretty useless lol
You need to improve your real life ESP skills I guess. Cause I can totally see the path without using the spell in game. In fact, I see all the paths for all the quests at once. Yes, it gives me a headache but that's what Ibuprofen is for.
LOL Just kidding. I got the spell for my character but have not used it yet. Should try though, I've had a couple dragon nests that were in hard to find locations atop mountains.