Please tell me if this is normal.

We select 60 workstations and under quick task select wake up.
In the first min. only 2 or 3 workstations come on
5 min another
15 min maybe 2 or 3 more
after 60 min still not all of the machines have powered on. not even half

Is there a way to speed this up?
Are we doing this the proper way?