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	168224	July 25, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	16307	November 17, 2021
Epic's GPUlightmass unreal-engine	1035	89501	October 14, 2026
Incorrect Rendering results with Negative Scale When Using Packaged Level Actor / FastGeo ISMTransformer unreal-engine , hism	1	36	October 14, 2026
Screen Space Reflection worse in 5.7 compared to 5.3 question , unreal-engine	1	47	October 14, 2026
Distance Field shader doesn't appear in editor but does when changing values question , unreal-engine	1	25	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	189	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	56	October 14, 2026
Emissive material gone crazy question , unreal-engine	6	104	October 14, 2026
Unreal Engine Buffers/Passing values. Blueprint , InsideUnreal , question , CPP , Shaders , Post-Processing , Rendering , unreal-engine , Render , buffer , Post-Process , data	1	21	October 14, 2026
World Space Widget becomes darker randomly / mouse movement sometimes fixes it Blueprint , fortnite , unreal-editor-for-fortnite	2	23	October 13, 2026
Camera Cut binding being Overwritten question , Rendering , unreal-engine	2	54	October 13, 2026
Bug Report: GPU remains idle (0-1%) and render time stalls when exporting Lumen video with MP4 video textures twinmotion	1	33	October 13, 2026
Some of my textures wont convert to Virtual Textures Rendering , unreal-engine	5	2821	October 13, 2026
UE 5.7 – Substrate + Clear Coat + Lumen HWRT causes colorfill square artifact question , bug-report , unreal-engine	4	273	October 12, 2026
NVIDIA® OptiX in UE5? Rendering , unreal-engine	3	3143	October 12, 2026
UE5 Emissive materials not casting light Shaders , Lighting , unreal-engine , light , lighting-problem , UE5-0	11	13505	October 12, 2026
Insane flickering with Anti-Aliasing (TAA and TSR) on editor gizmos question , editor , unreal-engine	2	43	October 12, 2026
TSR ghosting against a VolumetricCloud the player stands inside — every rejection knob measured, none help question , unreal-engine	1	78	October 12, 2026
How do I remove ambient occlusion dithering? question , unreal-engine	2	77	October 12, 2026
I can't find the engine scalability settings anywhere so can someone help? question , editor , unreal-engine	9	4029	October 11, 2026
[RESOLVED] Metahuman Hair renders on top of translucent materials Lighting , Rendering , unreal-engine	12	5981	October 11, 2026
Parts of mesh invisible question , unreal-engine	17	145	October 10, 2026
Movie Render Queue: Missing indirect bounce lighting question , Rendering , unreal-engine	5	77	October 9, 2026
Runtime Virtual texture on landscape. Blur issues. question , unreal-engine	2	52	October 9, 2026
Help rendering god rays, caustics, and underwater scenes question , unreal-engine	1	60	October 9, 2026
Depth Fade fog bug question , unreal-engine	1	53	October 9, 2026
UE 5.8 megaplants error, crash unreal-engine	6	450	October 8, 2026
Nanite Voxelization is Noisy Nanite , Foliage , unreal-engine , noise , voxel	5	335	October 8, 2026
nDisplay Movie render Queue -- Stretch issue only for one panel (floor display) question , unreal-engine	1	74	October 8, 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…