FIXED FOR ME: Disabled Studio Telemetry plugin, UDP Messaging / TCP Messaging. That improves editor lag, then for game performance, use the settings below.
[/Script/Engine.RendererSettings]
;Transluceny has big cost when raining reducing here to half res is acceptable
r.SeparateTranslucencyScreenPercentage=66
r.ReflectionMethod=2
r.GenerateMeshDistanceFields=True
r.DynamicGlobalIlluminationMethod=1
r.Shadow.Virtual.Enable=1
r.SkinCache.CompileShaders=True
r.RayTracing=False
r.Shadow.UnbuiltPreviewInGame=False
r.AllowStaticLighting=False
r.VirtualTextures=True
r.VirtualTexturedLightmaps=False
r.Lumen.TraceMeshSDFs=0
r.Shadow.CSMCaching=True
r.ReflectionCaptureResolution=64
r.AntiAliasingMethod=4
r.MSAACount=4
r.Mobile.EnableStaticAndCSMShadowReceivers=False
r.Mobile.EnableStaticAndCSMShadowReceivers=False
r.CustomDepth=3
r.DefaultFeature.AutoExposure.ExtendDefaultLuminanceRange=True
r.GPUSkin.Support16BitBoneIndex=True
r.GPUSkin.UnlimitedBoneInfluences=True
r.SkinCache.DefaultBehavior=0
SkeletalMesh.UseExperimentalChunking=1
r.Nanite.ProjectEnabled=True
bEnableVirtualTextureOpacityMask=True
r.Water.SingleLayer.DepthPrepass=True
r.Water.SingleLayer.ShadersSupportVSMFiltering=True
r.Water.SingleLayer.VSMFiltering=True
r.Lumen.SampleFog=0
r.Lumen.Reflections.Contrast=0.75
r.VolumetricFog.Emissive=0
r.optimizedWPO=1
r.Nanite.MaxVisibleClusters=10485760
r.Nanite.MaxCandidateClusters=16777216
r.Nanite.MaxNodes=10485760
r.Nanite.RasterIndirectionMultiplier=1.1
r.Shadow.Virtual.TranslucentQuality=1
r.Lumen.HardwareRayTracing=False
r.RayTracing.Culling=3
r.RayTracing.Culling.Radius=10000
r.RayTracing.Culling.Angle=2
r.RayTracing.Geometry.NiagaraRibbons=0
r.RayTracing.Geometry.NiagaraSprites=0
r.RayTracing.Geometry.NiagaraMeshes=0
r.TSR.History.SampleCount=32
r.TSR.ShadingRejection.Flickering.FrameRateCap=30
r.TSR.ShadingRejection.Flickering.MaxParralaxVelocity=2
r.TSR.ShadingRejection.Flickering.Period=3
r.SupportStationarySkylight=False
r.SupportLowQualityLightmaps=False
r.Mobile.AllowDistanceFieldShadows=False
r.DefaultBackBufferPixelFormat=4
r.GBufferFormat=3
r.Substrate.AccurateSRGB=1
r.Substrate=False
r.Substrate.BytesPerPixel=170;
r.Nanite.AllowTessellation=1
r.Nanite.Tessellation=1
r.PathTracing=False
r.Shadow.Virtual.UseFarShadowCulling=0
r.Shadow.Virtual.NonNanite.IncludeInCoarsePages=0
r.Lumen.Reflections.HardwareRayTracing.Translucent.Refraction.EnableForProject=False
r.DefaultFeature.MotionBlur=False
r.DefaultFeature.AmbientOcclusionStaticFraction=False
r.SupportLocalFogVolumes=False
r.SupportSkyAtmosphereAffectsHeightFog=False
r.SeparateTranslucency=False