Optimize Enlighten Realtime Global Illumination

Enlighten Realtime Global IlluminationA group of techniques that model both direct and indirect lighting to provide realistic lighting results.
See in Glossary uses a set of lightmapsA pre-rendered texture that contains the effects of light sources on static objects in the scene. Lightmaps are overlaid on top of scene geometry to create the effect of lighting. More info
See in Glossary to store real-time indirect bounces. For this reason, enabling it increases memory requirements, even if you are using it along with Baked Global Illumination.

The number of shaderA program that runs on the GPU. More info
See in Glossary calculations needed to generate lighting also increases when you use EnlightenA lighting system by Geomerics used in Unity for Enlighten Realtime Global Illumination. More info
See in Glossary Realtime Global Illumination because it samples an additional set of lightmaps and Light ProbesLight probes store information about how light passes through space in your scene. A collection of light probes arranged within a given space can improve lighting on moving objects and static LOD scenery within that space. More info
See in Glossary.

If Enlighten Realtime Global Illumination doesn’t respond quickly enough to changes in your SceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
See in Glossary lighting, there are several ways to address this problem:

• Reduce the real-time lightmap resolution to speed up calculation at runtime.
• Increase the CPU Usage setting for Realtime GI in the Quality Settings window. The tradeoff is that other systems receive less CPU time to do their work. Whether this is acceptable depends on your Project. This is a per-Scene setting, so you can dedicate more or less CPU time based on the complexity of each individual Scene in your Project.