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…	2371	150050	May 22, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15626	November 17, 2021
Having an issue editing materials on my external monitor seems to be something getting confused in the difference in resolution question , twinmotion	0	3	June 9, 2026
How do I prevent an emissive material from lighting the environment? question , unreal-engine	1	29	June 9, 2026
Viewports turned black after dropping sprite into content broswer question , bug-report , unreal-engine	1	16	June 9, 2026
Screen Space GI with TAA produces temporally unstable speckle noise unreal-engine	1	12	June 9, 2026
Material/local shading jitters during camera pulse movement unreal-engine	0	15	June 9, 2026
Light/volumetric contribution flickers during camera movement unreal-engine	0	12	June 9, 2026
SceneCapture2D appears to cause main viewport flicker in a static scene unreal-engine	0	12	June 9, 2026
Spotlight contribution shows ring/banding artifacts during slow camera movement unreal-engine	0	8	June 9, 2026
Isolated colored light spots appear/disappear in lighting/reflection views unreal-engine	0	11	June 9, 2026
When rendering with Sequencer, why does a building actor that I've already deleted from the level still show up in the final render? question , unreal-engine	2	34	June 9, 2026
High-frequency stripe material shimmers and destabilizes nearby reflections unreal-engine	0	11	June 9, 2026
Decals pop in/out during camera movement unreal-engine	0	7	June 9, 2026
Thin bars/fences flicker or have inconsistent visibility in reflections unreal-engine	0	9	June 9, 2026
Emissive objects leave ghosted/flickering contributions in mirror reflections unreal-engine	0	9	June 9, 2026
Landscape painting Roughness texture issue - Roughness not applying correctly question , unreal-engine , landscape-painting	1	23	June 9, 2026
My twinmotion characters and animated objects flicker like hell! question , bug-report , twinmotion	0	6	June 9, 2026
Need Shadow Catcher / Matte Shadow Rendering , unreal-engine	21	3805	June 9, 2026
MegaLights feedback thread Lighting , Rendering , unreal-engine , MegaLights	337	20465	June 9, 2026
Path Tracing Render Crashes on Large Project (RTX 4080 Super, 64GB RAM) question , unreal-engine	10	470	June 8, 2026
[UE5.7] Heterogeneous Volumes - Border artifacts unreal-engine	0	21	June 8, 2026
How can I turn off certain Revit lights in Twinmotion? I see no options in Twinmotion that turn off the light but leave the fixture. Turning them off in the rendering dialog in Revit doesnt work. ... question , twinmotion	3	311	June 8, 2026
Baked volumetric lightmap has lower quality than 5.8 lumen Irradiance field question , unreal-engine	2	56	June 7, 2026
Scene Capture 2D transparent background question , unreal-engine , transparency , Scene-Capture , UMG	11	10936	June 7, 2026
Trim progress bar using alpha question , unreal-engine	2	68	June 7, 2026
Can 4.5 Video Textures support alpha channels? question , texture , unreal-engine , alpha , video , channel , Media-Framework	18	5425	June 7, 2026
Colorful dots in render question , unreal-engine	4	84	June 7, 2026
Windy foliage jittering in Path Tracer unreal-engine	2	56	June 7, 2026
TAA + Screen Space GI causes reflected light to flicker on glossy surfaces unreal-engine	0	21	June 7, 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…