1.Solve 3ds max render times script，In 3dsmax scene, Modify “refraction useInterpolation” and “reflection_useInterpolation” parameters.
2.n the scene is relatively large, Vray material is used in a lot of scenes, it is convenient and fast.
3.Before using a backup file, try several times, you’ll like it.
Reasons for rendering Irradiance map:
Default Vray material parameters: