Sounds like vsync is enabled so he will be reporting multiples of 60fps (I assume you know this but I will include it for everyone else)

1/5 12fps
1/4 15fps
1/3 20fps
1/2 30fps
1 60fps
2 120fps
3 180fps
4 240fps
5 300fps

ie if he is running at 55fps he will drop to 30fps likewise at 100fps he will drop to 60fps

if so there probably is not much to worry about 30-60fps in dalaran with everything on sounds decent especially if there are a lot of people around. The first thing I would disable is shadows