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	146296	March 26, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15521	November 17, 2021
Movie Render Graph and Object Ids in 5.5.1 unreal-engine , graph	16	1003	April 24, 2026
How to make worldspace UI ignore anti aliasing? question , unreal-engine	0	5	April 24, 2026
Epic's GPUlightmass unreal-engine	887	73479	April 24, 2026
Random Ray Tracing Crashes in D3D12RHI question , unreal-engine , Epic-Pro-Support	6	143	April 24, 2026
UE 5.7 – Substrate + Clear Coat + Lumen HWRT causes colorfill square artifact question , bug-report , unreal-engine	3	61	April 24, 2026
Title: Persistent Lumen GI Ghosting / Smearing on Moving Objects Despite Velocity and CVar Adjustments Unreal Engine Version: [5.7.4] question , unreal-engine	1	6	April 24, 2026
Substrate material: Black artifacts in "Substrate Horizontal Blend" section question , unreal-engine	0	13	April 24, 2026
UE 5.7.x Linux – VK_ERROR_DEVICE_LOST in Vulkan RHI question , unreal-engine	11	532	April 23, 2026
Foilage broken... question , unreal-engine	0	10	April 23, 2026
TextureCollection updates at runtime question , unreal-engine , Epic-Pro-Support	7	201	April 23, 2026
(5.6.1) Light function Material stops working when level starts, then remains off when exiting. question , Lighting , unreal-engine , lighting-problem , light-function	0	33	April 23, 2026
View UVs for Skeletal Mesh question , editor , skeletalmesh , uvs , unreal-engine	10	19779	April 23, 2026
MRQ Panoramic Rendering blurry (UE 5.7) question , unreal-engine	0	19	April 23, 2026
How to fix post process material (after tonemapping) gamma issue with renders? question , unreal-engine	0	24	April 23, 2026
smooth/sharp edges on RenderTarget/Texture2D question , unreal-engine	1	24	April 23, 2026
Mesh edge pixelated question , unreal-engine	4	57	April 23, 2026
Path tracing SSS Albedo Remapping — Unconditional G Correction Possible Bug question , unreal-engine	1	21	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	292	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	700	April 22, 2026
Different clouds from camera view to still image using MRQ question , Rendering , unreal-engine , Clouds	0	16	April 22, 2026
Megaplants and Path Tracing not working [5.7.4] unreal-engine	2	74	April 22, 2026
How to turn off Camera casting spherical shadow onto landscape or static mesh ground. unreal-engine	0	27	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	48	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	3346	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	110	April 21, 2026
Are shadows on translucent material really not possible? question , Lighting , Shadows , translucent , unreal-engine , transparency , Water	8	6297	April 21, 2026
Foliage Grass flickering in the shadow UE5 Lumen Lumen , question , Rendering , unreal-engine , UE5-0	13	8404	April 21, 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…