I’ve just posted up another new script! You can read all about it here in the scripts section. What it basically does is make a nice, easy way and integrating large, complicated models into a scene with lots of other large, complicated models! It makes the files manageable, the renders more efficient and the viewport faster! I developed it in order to create a model of the entirety of London, which in total was hundreds of millions of polys.
Please note, the script requires VRay!