Mine load up in about a second, if my phones running slower than normal (which by some days it is some days its lightning) it will take about 3 seconds.
I notice this as well with the camera app.
It does vary by the day though.
Not totally sure why this would be, but I'm guessing applications, battery, as well as amount of contacts?
I have abuot 800+ contacts in my phone and it didnt make a difference I found between my INC and my X.