# substrate materials wont let me bake gi

**URL:** <https://forums.unrealengine.com/t/substrate-materials-wont-let-me-bake-gi/2683091>\
**Category:** Rendering\
**Tags:** unreal-engine, question\
**Created:** [December 8, 2025, 1:51pm UTC](https://forums.unrealengine.com/t/substrate-materials-wont-let-me-bake-gi/2683091 "2025-12-08T13:51:11Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![glitchered](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/glitchered/32/768299_2.png) [@glitchered](https://forums.unrealengine.com/u/glitchered)\
**Post date:** [December 10, 2025, 9:14am UTC](https://forums.unrealengine.com/t/substrate-materials-wont-let-me-bake-gi/2683091/9 "2025-12-10T09:14:54Z")

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it was [this problem](https://forums.unrealengine.com/t/ue-5-6-has-no-swarm-manager/2539483). i’m actually not sure you have the same issue. reconsidering you bake black lightmaps? well…

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