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…	2380	168541	July 25, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	16318	November 17, 2021
UE 5.8 is Hierachical Instance meshes not supported for Lumen? question , unreal-engine	2	34	October 17, 2026
Light Flickering with Cinematic question , unreal-engine	0	18	October 16, 2026
Unreal Engine Buffers/Passing values. Blueprint , InsideUnreal , question , CPP , Shaders , Post-Processing , Rendering , unreal-engine , Render , buffer , Post-Process , data	3	38	October 16, 2026
Translucent Wall Leaks Light question , unreal-engine	2	21	October 16, 2026
How to adjust the complex collision body to align with the original vertex positions of the grid body question , unreal-engine	2	19	October 16, 2026
Path Tracing Artifiacts question , unreal-engine	2	27	October 16, 2026
Help with static mesh importing very low despite high polygons... question , unreal-engine	1	23	October 16, 2026
UE 5.8 – Skeletal Meshes lose shadows with MegaLights at GI Medium (fix) Lumen , Shadows , unreal-engine , Scalability , scalability-settings , MegaLights	0	44	October 15, 2026
Screen Capture Not Rendering Shadow Blueprint , question , Lighting , Rendering , unreal-engine	5	237	October 15, 2026
How can I extract and export SceneDepth and SceneColor from SceneCapture2D in a Blueprint? question , Rendering , unreal-engine , UE5-0	7	1615	October 15, 2026
Screenshot at runtime without stutter question , CPP , Rendering , unreal-engine , engine	3	1263	October 15, 2026
Read Pixel outputs different results depending on platform? question , unreal-engine , Mobile , render-target , windows , UE-5	10	769	October 15, 2026
UE 5.7 – Substrate + Clear Coat + Lumen HWRT causes colorfill square artifact question , bug-report , unreal-engine	5	288	October 15, 2026
Incorrect Rendering results with Negative Scale When Using Packaged Level Actor / FastGeo ISMTransformer unreal-engine , hism	2	70	October 15, 2026
Depth Fade fog bug question , unreal-engine	3	77	October 14, 2026
Epic's GPUlightmass unreal-engine	1035	89793	October 14, 2026
Screen Space Reflection worse in 5.7 compared to 5.3 question , unreal-engine	1	61	October 14, 2026
Distance Field shader doesn't appear in editor but does when changing values question , unreal-engine	1	34	October 14, 2026
Emissive not rendering on a transparent background PNG with movie render queue question , Rendering , unreal-engine , logo , Render , alpha , emissive , sequence , png	14	204	October 14, 2026
UE5.8: Lumen Hardware Ray Tracing shows abnormal lighting and reflection results when running in the Editor on AMD 6000+ series GPUs (images attached). Is there a way to fix this issue? question , unreal-engine	2	77	October 14, 2026
Emissive material gone crazy question , unreal-engine	6	122	October 14, 2026
World Space Widget becomes darker randomly / mouse movement sometimes fixes it Blueprint , fortnite , unreal-editor-for-fortnite	2	24	October 13, 2026
Camera Cut binding being Overwritten question , Rendering , unreal-engine	2	70	October 13, 2026
Bug Report: GPU remains idle (0-1%) and render time stalls when exporting Lumen video with MP4 video textures twinmotion	1	39	October 13, 2026
Some of my textures wont convert to Virtual Textures Rendering , unreal-engine	5	2839	October 13, 2026
NVIDIA® OptiX in UE5? Rendering , unreal-engine	3	3148	October 12, 2026
UE5 Emissive materials not casting light Shaders , Lighting , unreal-engine , light , lighting-problem , UE5-0	11	13522	October 12, 2026
Insane flickering with Anti-Aliasing (TAA and TSR) on editor gizmos question , editor , unreal-engine	2	51	October 12, 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…