r.RayTracing.GlobalIllumination.MaxLightCount
VarUnreal Engine Var console variable.
rRayTracingGlobalIlluminationMaxLightCount
Description
Enables two-sided geometry when tracing GI rays (default = 256)
Usage
r.RayTracing.GlobalIllumination.MaxLightCount [value]Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.

