r.RayTracing.GlobalIllumination.UseRussianRoulette
VarUnreal Engine Var console variable.
rRayTracingGlobalIlluminationUseRussianRoulette
Description
Perform Russian Roulette to only cast diffuse rays on surfaces with brighter albedos (default = 0)NOTE: This parameter is experimental
Usage
r.RayTracing.GlobalIllumination.UseRussianRoulette [value]Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.

