This is the documentation for Enlighten.
Level properties
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Enlighten automatically creates an Enlighten System Container actor for each level in the world. The properties of each Enlighten System Container actor affect all the actors in the same level. For more information about levels, see the Unreal Engine documentation
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When using World Partition, there is no Enlighten System Container actor. Instead, the level properties apply to the entire world and are specified in World Settings >Enlighten Settings.
Partition Name
Specify the Enlighten partition for the containing level. All levels with the same Enlighten partition name will be precomputed together. To change the active Enlighten partition in game mode, use the SetEnlightenActiveLevel blueprint function.
Default Quality
The quality preset applied to actors which have Enlighten Quality set to Use Level Default.
Default Update Method
The update method applied to actors which have Enlighten Update Method set to Use Level Default.
Adaptive Probe Resolution
The resolution of the probe data created for actors using Probe lighting mode. This is a proportion of the Adaptive Probe Grid Spacing setting found in World Settings.
Disable Enlighten
When enabled, no Enlighten lighting information is generated for actors in the level. You can also disable Enlighten for the entire scene using World Settings > Enlighten > Disable Enlighten.
Advanced properties
To show or hide these properties, click the arrow at the bottom of the section.
Allow Gpu Input Shadowing
When enabled, Enlighten systems in this container can use GPU shadowing to compute input light visibility. If you don't need this, disable it to prevent the required data loading, saving memory.
Quantise Mesh Scale
When enabled, share Enlighten UVs between instances with similar scale values. This option is deprecated and in a future release it will not be possible to disable.