Next one:
By default, this is the kind of result new user will get when trying to use Ray Traced SkyLight with the usual unreal environment light setup:
It is not obvious for many that in order for Ray Traced skylight to works, the environment sphere captured by SkyLight capture needs to have Ray Tracing disabled:
The problem is that when Ray Tracing of the Environment sphere is disabled, Ray Tracing instead reflects the low resolution Skylight Capture sphere. This forces user to make very uncomfortable choice between accurate environment reflections or functional environment skylight illumination: