how to make realtime light update less frequent than 60/s?

reference to doc,or basic script would be welcome :slight_smile:

I don’t quite understand the question. Realtime lighting is calculated on-the-fly during rendering. It’s part of the rendering pipeline. It’s calculated in realtime each frame. There is no way to calculate it only every second frame.

Limit the framerate. The realtime light is calculated once per frame.