Mie scattering means something different in this context. It won't interfere with RTH at all is the short story. In the context of RTH, "Mie scattering" applies to scattering of light through the atmosphere as it goes from distant terrain to your eye. In the context of SkyMaxx Pro 3, Mie scattering refers only to how light is scattered by our new stratiform clouds. There is a very complicated "Mie function" that we simulate down to 0.1-degree precision at three different wavelengths in order to produce the most realistic looking stratus clouds we can. Ever notice a faint, circular rainbow on top of flat stratus clouds when viewed from above? That's a result of Mie scattering within the cloud, and you'll see that in SMP3.