There are some wonky lighting issues in some of the areas. Lighting will render, but pieces only light up properly when you get close and look dark from a distance. Unless you are high above the actual "map" proper. I guess the rendering only works properly in that specific area.

The island I used for the map in my Fileshare hasn't got as many issues. Some Islands are covered in Kill Zones and others make the lighting so weird it's not really feasible for competitive maps. If you try to go too close to the inside of the map, you'll hit the back of the kill zones.

You also can only go to about 875 high.

You can go to the edge of the ocean and a little over the edge of the world, but there is another kill zone there.