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- For point and spot lights that move, turn off shadows or use Shadow Map Caching (Unreal Engine documentation)
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- Movable directional lights cast shadows for the whole level and therefore incur the most cost. Where possible, disable shadowcasting per actor.
- Depending on the level, general optimization techniques such as merging actors (Unreal Engine documentation)
- MegaLights provides efficient dynamic shadows for scenes with many light sources.
Each of the above optimizations requires additional artist time to configure the level. We recommend that you apply each optimization only if you have problems with the cost of dynamic shadows.
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