How to load 1000 push pins in nokia maps in small chunks

Hi All,

I am working on a window phone 8 app. Here  I have to show around 1000 push Pins on a nokia map which I am able to show up. But my problem is that the push pins are taking a lot of time to load on tha map making abad user experience.

So Is there any method where I could load the pins in chunks so that the user experience becomes good.