Sets the maximum ray distance for ray traced reflection rays. When ray shortening is used, skybox will not be sampled in RT reflection pass and will be composited later, together with local reflection captures. Negative values turn off this optimization. (default = -1 (infinite rays))
Usage
r.RayTracing.Reflections.MaxRayDistance [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.
