# Ultra Hard Shadows in nanite meshes with lumen

**URL:** <https://forums.unrealengine.com/t/ultra-hard-shadows-in-nanite-meshes-with-lumen/1806053>\
**Category:** Rendering\
**Tags:** unreal-engine, Rendering, question, World-Composition\
**Created:** [April 16, 2024, 8:05am UTC](https://forums.unrealengine.com/t/ultra-hard-shadows-in-nanite-meshes-with-lumen/1806053 "2024-04-16T08:05:35Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Fere201](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Fere201](https://forums.unrealengine.com/u/Fere201)\
**Post date:** [April 16, 2024, 8:05am UTC](https://forums.unrealengine.com/t/ultra-hard-shadows-in-nanite-meshes-with-lumen/1806053/1 "2024-04-16T08:05:35Z")

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Hi there!  
I was trying to use nanite meshes from Bridge in my scene, but encountered ultra hard shadows only on those meshes, normal meshes like the mannequin or cubes appear to be correct. Does someone know how to fix this issue?

 ![HighresScreenshot00001](https://d3kjluh73b9h9o.cloudfront.net/original/4X/4/7/d/47dc4d9d044a8c5dd4d9453d689f475736624f6b.jpeg)

 ![HighresScreenshot00000](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/0/6/d0608c0a862227478095936f88412e111f43e143.jpeg)

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**Author:** ![chrudimer](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/chrudimer/32/918651_2.png) [@chrudimer](https://forums.unrealengine.com/u/chrudimer)\
**Post date:** [April 16, 2024, 8:31am UTC](https://forums.unrealengine.com/t/ultra-hard-shadows-in-nanite-meshes-with-lumen/1806053/2 "2024-04-16T08:31:55Z")

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Hi, there was some problem with ambient occlusion in some megascans material ( [Pitch black shadows on megascans fixed! (one way to fix it) - #2 by Pin3d](https://forums.unrealengine.com/t/pitch-black-shadows-on-megascans-fixed-one-way-to-fix-it/578125/2) ). So you could try to change the ambient occlusion value in the material to 1.

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**Author:** ![Fere201](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Fere201](https://forums.unrealengine.com/u/Fere201)\
**Post date:** [April 16, 2024, 10:40am UTC](https://forums.unrealengine.com/t/ultra-hard-shadows-in-nanite-meshes-with-lumen/1806053/3 "2024-04-16T10:40:53Z")

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Thanks for your fast response! It fixed the issue

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**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\
**Post date:** [May 16, 2024, 10:41am UTC](https://forums.unrealengine.com/t/ultra-hard-shadows-in-nanite-meshes-with-lumen/1806053/4 "2024-05-16T10:41:39Z")

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