Uploaded April 2022 | Updated September 2026, 4 hours ago

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UPDATE: Now enabled in Chapter 4, you no longer need to do any of this for Lumen lighting.


=== Original Description ===

UE5 Lumen in Software Mode.

Small update post upload, added a few more changes to the settings below to help produce higher image quality and prevent colors from washing out with ExtendDefaultLuminanceRange.

General Settings:
All Graphics Maxed @ 4k 10bit color, recorded at 1440p.

Open GameUserSettings.ini in %localappdata%\FortniteGame\Saved\Config\WindowsClient\
Under [/Script/FortniteGame.FortGameUserSettings] add the following:
r.ReflectionMethod=1
r.GenerateMeshDistanceFields=True
r.DynamicGlobalIlluminationMethod=1
r.Mobile.EnableNoPrecomputedLightingCSMShader=1
r.SkinCache.CompileShaders=True
r.RayTracing=True
r.RayTracing.Shadows=True
r.RayTracing.Skylight=True
r.Shadow.Virtual.Enable=1
r.Lumen.HardwareRayTracing=False
r.Lumen.TraceMeshSDFs=1
r.NormalMapsForStaticLighting=True
r.RayTracing.UseTextureLod=False
r.Material.RoughDiffuse=True
r.ClearCoatNormal=True
r.AllowGlobalClipPlane=True
r.SeparateTranslucency=True
r.TranslucentSortPolicy=0
r.ReflectionEnvironmentLightmapMixBasedOnRoughness=True
r.SupportCloudShadowOnForwardLitTranslucent=True
r.VirtualTextures=True
r.VT.AnisotropicFiltering=True
r.VirtualTexturedLightmaps=True
r.VT.TileBorderSize=64
r.VT.TileSize=1024
r.PostProcessing.PropagateAlpha=1
r.DefaultFeature.AutoExposure.ExtendDefaultLuminanceRange=True
r.AntiAliasingMethod=4
r.AllowStaticLighting=False
r.Material.EnergyConservation=True
r.ReflectionCaptureResolution=1024

For 10bit color add
r.DefaultBackBufferPixelFormat=4