...well I don't know...

...!
I find that if I set up realistic weather conditions, which normally includes low cloud, rain, mist, fog, smoke, etc, and set a realistic "visibility distance" in FS 2004, the Autogen scenery gradually comes into view as I approach it, automatically....
...like it does in real life.....NOT
unlimited visibility!
Paul...G-BPLF...FS 2004...FS Navigator....and normal "clear?" visibility set to 3- 5 miles Max...

...!
Win 8.1 64-bit. DX11. Advent Tower. Intel i7-3770 3.9 GHz 8-core. 8 GB System RAM. AMD Radeon HD 7700 1GB RAM. DVD ROM. 2 Terra Byte SATA Hard Drive. Philips 17" LCD Monitor. Saitek Cyborg X Fly-5 Joystick. ...and a Briggs and Stratton Petrol Lawn Mower.