I am also looking for a similiar technique like the “Environment Probe” in CryEngine. Because there you could have multiple level/layers with different times of day and it automatically updates the reflection capture when switching the lighting conditions. Currently I always have to rebuild reflection capture when I unhide a certain level with another time of day(Directional light in it) to get a proper reflection in the scene. Or is there a different way to achieve this in UE4?