Artlantis (versions 6, 7, and 2021/2024) is built on speed. You are likely using it because you don't have time for the complexity of Unreal Engine or the slowness of high-end V-Ray.
: Transparency, reflectivity, and bump maps are pre-configured to match the Artlantis rendering engine's physics. Archmodels 62 for artlantis by-MAQ