When [EnableLowResRasterization] is set to" true", rasterization of smooth shaded transparency regions can be affected when the standard hybrid flattening process is used (not by global rasterization).
Whereas images specify their own resolutions, smooth shades do not. The parameter controls low-resolution rasterization for smooth shades. Its value is a floating-point number that specifies the minimum resolution, respectively, to be used for low-resolution rasterization of atomic regions that include smooth shades. This parameter is ignored when [EnableLowResRasterization] is "false".
Setting [MinShadeRasterization] to “200” is a good starting point for setting this value.