Recreate Map

I am trying to recreate the map as seen in the game 'Tom Clancy’s The Division’ for an indie game I am creating.

My two biggest issues I’m having is that I’m getting a moire pattern and a chromatic aberration, not to mention the buildings dropping in randomly 1 by 1 takes a lot of manual work.

I’m using real world locations, (such as ROME and Vatican City) into ue4 which I get from NASA’s website . . (select the GDEx(LP DAAC) option )highlight and download the map.

Is anyone able to shed some light on this for me?

Thank you.