Same issue here
Things I’ve already done to 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 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