Rendering

Topic	Replies	Views	Activity
Lumen GI and Reflections feedback thread Lumen , unreal-engine , Staff-Pick-UE Hi everyone, I’m starting this thread for feedback and discussion about Lumen GI and Reflections in UE5. We’re under a lot of pressure with internal deadlines so can’t promise responses, but we will read everything here…	2355	146217	March 26, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15519	November 17, 2021
Mesh edge pixelated question , unreal-engine	4	50	April 23, 2026
Path tracing SSS Albedo Remapping — Unconditional G Correction Possible Bug question , unreal-engine	1	18	April 23, 2026
No indirect lighting baked CPU Lightmass 5.7.1 and 5.6.1 question , Lighting , unreal-engine , lighting-problem , baked-lighting	5	282	April 22, 2026
Unreal (5.4.4 and 5.6 Preview) Lightmass on Mac stopping at 0% question , Lightmass , apple , building-lighting , unreal-engine , baked-lighting , Macos	15	695	April 22, 2026
Different clouds from camera view to still image using MRQ question , Rendering , unreal-engine , Clouds	0	13	April 22, 2026
Megaplants and Path Tracing not working [5.7.4] unreal-engine	2	68	April 22, 2026
How to turn off Camera casting spherical shadow onto landscape or static mesh ground. unreal-engine	0	25	April 22, 2026
When r.RayTracing.Shadows.Translucency is enabled, the directional light source angle causes distant shadows to blur and fade out. question , unreal-engine	4	44	April 22, 2026
Epic's GPUlightmass unreal-engine	886	73432	April 22, 2026
Pixelated DOF issue on out of focus objects close to the camera when rendering through Movie Render Queue. (UE 5.6) question , Rendering , Depth-Of-Field , unreal-engine , DOF	45	3326	April 22, 2026
How to Offset ReflectionVectorWS question , Reflections , unreal-engine	10	211	April 21, 2026
Having issues using Quixel Megaplants/Nanite Foliage with Pathtracer? Nanite , Foliage , skeletalmesh , unreal-engine	4	107	April 21, 2026
Are shadows on translucent material really not possible? question , Lighting , Shadows , translucent , unreal-engine , transparency , Water	8	6295	April 21, 2026
Movie Render Graph and Object Ids in 5.5.1 unreal-engine , graph	15	1001	April 21, 2026
Foliage Grass flickering in the shadow UE5 Lumen Lumen , question , Rendering , unreal-engine , UE5-0	13	8403	April 21, 2026
nDisplay – Previewing the warped/projected render in-editor during PIE? unreal-engine , interactive-objects , projection , pie , editor-viewports , ndisplay	0	15	April 21, 2026
Water material looks different in Editor and built application unreal-engine	1	292	April 21, 2026
UE5.4 shadow flickering/jitter on meshes at distance and in profile view unreal-engine	2	34	April 21, 2026
Substrate - Feedback Thread Rendering , unreal-engine , Physically-Based-Shading , Staff-Pick-UE , Substrate	783	42744	April 20, 2026
Why is the Nanite VRAM Cache hardcoded to NVIDIA 2GB vs AMD 4GB? Nanite , question , CPP , Rendering , unreal-engine	2	289	April 20, 2026
My lighting dissapears when rendering out from sequenncer question , unreal-engine	2	32	April 20, 2026
Why does Lumen produce different initial lighting results when reopening an Unreal Engine project? Lumen , question , Rendering , unreal-engine , ao	5	56	April 20, 2026
Frame drops while rotating camera even with empty level question , unreal-engine	4	55	April 20, 2026
Light Visibility Through Glass Objects/Materials Lighting , Rendering , refraction , unreal-engine , light , glass , Path-Tracing , Path-Tracer	4	2309	April 20, 2026
Substrate Automotive - Coated materials produce NaN/bad pixel unreal-engine , Render , Substrate	3	51	April 20, 2026
Windy foliage jittering in Path Tracer unreal-engine	1	24	April 20, 2026
Path Tracer keeps invalidating samples after switching to one of the "Geom. Inspect." viewmodes question , unreal-engine	0	19	April 20, 2026
UE 5.7 – Substrate + Clear Coat + Lumen HWRT causes colorfill square artifact question , bug-report , unreal-engine	2	58	April 19, 2026

Lumen GI and Reflections feedback thread

Lumen , unreal-engine , Staff-Pick-UE

Hi everyone, I’m starting this thread for feedback and discussion about Lumen GI and Reflections in UE5. We’re under a lot of pressure with internal deadlines so can’t promise responses, but we will read everything here…