# Flickering in a mirror UE 5.5 **URL:** \ **Category:** Rendering\ **Tags:** unreal-engine, Rendering, question\ **Created:** [January 17, 2025, 11:36am UTC](https://forums.unrealengine.com/t/flickering-in-a-mirror-ue-5-5/2282389 "2025-01-17T11:36:07Z")\ **Posts on this page:** 1\ **Showing post:** 13
**Author:** ![looore91](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@looore91](https://forums.unrealengine.com/u/looore91)\ **Post date:** [January 21, 2025, 10:08am UTC](https://forums.unrealengine.com/t/flickering-in-a-mirror-ue-5-5/2282389/13 "2025-01-21T10:08:12Z")
Hi everyone and thank you very much for your advice. I have done several tests in this time and finally got better results with this configuration: - Machine: i5-12400F, RTX 4060, 16 GB - The console variables in the export settings: `r.LumenScene.Radiosity.Temporal.MaxFramesAccumulated 32` `r.LumenScene.Radiosity.HemisphereProbeResolution 4` - Post processing box settings: Lumen Scene Lighting Quality 8 Lumen Scene Detail 4 Final Gather Quality 2 Quality (Lumen Reflection) 2 High Quality Translucency Reflections Yes Max Reflection Bounces 4 Max Refraction Bounces 4 - Mirror material: Color Base B8D9D9FF (slightly blue/green, I think it adds some realism) Metallic 1 Roughness 0.04 (a little bit of roughness helps with distant details that don’t reflect perfectly) Surely I could optimize the parameters even more but it looks good to me compared to the beginning. This is the result: [![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/f/3/1/f31a29609bf38e34515667e54710e979fee807c5.jpeg "NewLevelSequence12 2 14") ](https://www.youtube.com/watch?v=6Y2vbw4tBLQ) I will also keep the trick to duplicate the whole room and apply a transparent material in the mirror, in case I want to render the scene even more accurately. I will continue to do more testing and keep you updated! --- _[View the full topic](https://forums.unrealengine.com/t/flickering-in-a-mirror-ue-5-5/2282389)._