# Issues with mirror reflections

**URL:** <https://forums.unrealengine.com/t/issues-with-mirror-reflections/2131430>\
**Category:** Rendering\
**Tags:** mirror, rendering-artifact, resolution, Reflections, shadows-problem, Planar-Reflections, unreal-engine, flickering, bug-report, lighting-problem, question\
**Created:** [November 17, 2024, 6:33pm UTC](https://forums.unrealengine.com/t/issues-with-mirror-reflections/2131430 "2024-11-17T18:33:21Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![CaioHahnAgostinho](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/caiohahnagostinho/32/998035_2.png) [@CaioHahnAgostinho](https://forums.unrealengine.com/u/CaioHahnAgostinho)\
**Post date:** [November 17, 2024, 6:33pm UTC](https://forums.unrealengine.com/t/issues-with-mirror-reflections/2131430/1 "2024-11-17T18:33:21Z")

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There is flickering shadow bubbles and texture defects only in my mirrors reflections, while the rest of the scene seems ok. All the resolution changes I make in the project settings change the entire scene except the reflections of the mirror.  
This problem seems to be affecting a lot of people

I’m using the default settings of the architecture scene.  
UE 5.5 version  
Geforce RTX 2060 super  
Global Illumination: Lumen  
Reflections: Lumen

  

Things I’ve already try to fix this but didn’t work:

- Try using the previous version UE (5.4)
- Increase the resolution to Cinematic
- Try using planar reflections
- Update my video card driver
- Reinstall Unreal Engine
- Create a new project
- Try with a different type of light
- Fix the normals of the reflected objects and the mirror itself
- Use the default UE shapes like a cube for the entire scene
- Increase the screen percentage to 100% or more
- Change the materials of the objects and the mirror
- In GI, increase the “Final Gather Quality”
- Increase the Lumen Reflections quality
- Select the “High Quality Translucency Reflections”
- Increase the Sample Per Pixel of the light
- Increase the reflection bounces
- Check “Hit Lighting for Reflections”
- r.RayTracing.NormalBias 5
- r.Raytracing.Shadows.EnableTwoSidedGeometry 0
- r.Lumen.Reflections.MaxRayIntensity 3
- r.Lumen.Reflections.HiResSurface 1

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**Author:** ![flame\_eg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@flame\_eg](https://forums.unrealengine.com/u/flame_eg)\
**Post date:** [November 17, 2024, 7:16pm UTC](https://forums.unrealengine.com/t/issues-with-mirror-reflections/2131430/2 "2024-11-17T19:16:49Z")

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Had a similar problem, reinstalling nvidia drivers (with ddu) helped. 552.22 is the version that seems to work for me

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**Author:** ![Arkiras](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/arkiras/32/1008648_2.png) [@Arkiras](https://forums.unrealengine.com/u/Arkiras)\
**Post date:** [November 17, 2024, 8:12pm UTC](https://forums.unrealengine.com/t/issues-with-mirror-reflections/2131430/3 "2024-11-17T20:12:40Z")

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See this post:

> [@Lumen GI and Reflections feedback thread](https://forums.unrealengine.com/t/lumen-gi-and-reflections-feedback-thread/501108/1936):
>
> So I finally found some settings that’ll make the Archvis crowd stop complaining about noise under indirect light, especially in reflections. Maybe I’m late to the party here and someone else found this, but here it is: Default: r.LumenScene.Radiosity.Temporal.MaxFramesAccumulated 4 r.LumenScene.Radiosity.HemisphereProbeResolution 4 Default (Low) Probe Resolution, Very High Temporal Count: r.LumenScene.Radiosity.Temporal.MaxFramesAccumulated 32 r.LumenScene.Radiosity.HemispherePr…