# Light Bug when moving camera

**URL:** <https://forums.unrealengine.com/t/light-bug-when-moving-camera/616830>\
**Category:** Rendering\
**Tags:** light, unreal-engine, UE5-0, Rendering, Lighting, question\
**Created:** [July 29, 2022, 2:45am UTC](https://forums.unrealengine.com/t/light-bug-when-moving-camera/616830 "2022-07-29T02:45:16Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Osaki\_official1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Osaki\_official1](https://forums.unrealengine.com/u/Osaki_official1)\
**Post date:** [July 29, 2022, 2:45am UTC](https://forums.unrealengine.com/t/light-bug-when-moving-camera/616830/1 "2022-07-29T02:45:16Z")

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Hi everyone, I have an issue with my UE5 scene. My light is acting really weird whenever I use “High Resolution” option in my Render Movie Queue. The light is appearing and disappearing in some pretty random spots. I’ve played with the exposure of the camera to have it manual, but that doesn’t work. Whenever I try to render the scene without the High Resolution option, it works correctly. I do however need that option enabled due to the very high resolution of my final image and my Vram limitations. Has anyone else ever encountered a bug like this?  
Here is the video of how it looks in my scene.

> **[UE5 Lightning bug 1](https://www.youtube.com/shorts/91yPZ6xGtdg?feature=share)**

Any help would be much much appreciated. Thank you!

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**Author:** ![Osaki\_official1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Osaki\_official1](https://forums.unrealengine.com/u/Osaki_official1)\
**Post date:** [July 29, 2022, 2:46am UTC](https://forums.unrealengine.com/t/light-bug-when-moving-camera/616830/2 "2022-07-29T02:46:48Z")

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Also, wanted to mention my specification and version of the Unreal engine.  
I’m on Windows 10, RTX 3080, 128gbs of ram, Ryzen 9 3900x.  
Using Unreal 5.0.3

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**Author:** ![Osaki\_official1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Osaki\_official1](https://forums.unrealengine.com/u/Osaki_official1)\
**Post date:** [August 1, 2022, 11:32am UTC](https://forums.unrealengine.com/t/light-bug-when-moving-camera/616830/3 "2022-08-01T11:32:58Z")

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For anyone envountering a problem like that in the future, it’s a Lumen GI bug. For some reason it appears whenver using the High Quality rendering in the UE5. To get rid of it, either change the GI mode to something else than Lumen, or enable Hardware GI in the project settings and play with the Lumen distance settings and quality in the camera / post process volume settings.

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**Author:** ![nhalaza](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@nhalaza](https://forums.unrealengine.com/u/nhalaza)\
**Post date:** [October 30, 2023, 1:00am UTC](https://forums.unrealengine.com/t/light-bug-when-moving-camera/616830/4 "2023-10-30T01:00:25Z")

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Thank bro

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**Author:** ![hosmiccooper](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/hosmiccooper/32/88714_2.png) [@hosmiccooper](https://forums.unrealengine.com/u/hosmiccooper)\
**Post date:** [July 5, 2024, 3:57pm UTC](https://forums.unrealengine.com/t/light-bug-when-moving-camera/616830/5 "2024-07-05T15:57:15Z")

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Hello.I still encounter this problem in UE 5.4.3 .When i render my sequences with legacy version it seems like there is no problem.But when i try to render with movie render queue (high quality) there is this GI lumen bug in different shots.GI doesnt look like it shows in editor viewport.Playing with post process settings doesnt really help with it.I already turned on hardware ray tracing.Any workaround for this?
