- Dec 16, 2014
- 373
- 88

As stated on the wiki, it is used to (prevent the creation?) of visleafs inside its volume in case there are lots of props forming a symmetrical surrounding. However, I've only seen it being used in Lumberyard, or at least the only map I can recall right now that makes use of the entity inside the 3D Skybox.
I tested it myself and it Does prevent visleafs from being generated but, in terms of performance, I noticed no difference in the map I'm planning to implement it (since its 3D Skybox pretty much resembles that of Lumberyard).