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	150246	May 22, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15638	November 17, 2021
How do i make a Compression Artifact post-process like Imperfecter? Post-Processing , unreal-engine	2	23	June 11, 2026
Epic's GPUlightmass unreal-engine	922	76671	June 11, 2026
Viewports turned black after dropping sprite into content broswer question , bug-report , unreal-engine	4	46	June 11, 2026
Black Render on second launch after integrating bundled PSO cache question , unreal-engine	0	11	June 11, 2026
Lighting Flickers When Using Color Quantization in Post Process Material question , unreal-engine	0	18	June 10, 2026
Camera Shift / Vertical perspective issue in Archviz question , Camera , Rendering , unreal-engine , perspective , camera-view	3	1607	June 10, 2026
UE5.7 Enabling Path Tracer Adaptive Sampling causes movie render to crash question , unreal-engine	0	17	June 10, 2026
How can I create a pre-baked lighting room prefab in UE4? question , Lighting , Lightmass , Rendering , unreal-engine , Render , Lightmap , prefab	2	49	June 10, 2026
Twin 2026.1 HF crashed - TwinmotionCoockedEditor_Win64_Shipping question , twinmotion	1	56	June 10, 2026
Having an issue editing materials on my external monitor seems to be something getting confused in the difference in resolution question , twinmotion	0	6	June 9, 2026
How do I prevent an emissive material from lighting the environment? question , unreal-engine	1	38	June 9, 2026
Screen Space GI with TAA produces temporally unstable speckle noise unreal-engine	1	20	June 9, 2026
Material/local shading jitters during camera pulse movement unreal-engine	0	20	June 9, 2026
Light/volumetric contribution flickers during camera movement unreal-engine	0	19	June 9, 2026
SceneCapture2D appears to cause main viewport flicker in a static scene unreal-engine	0	15	June 9, 2026
Spotlight contribution shows ring/banding artifacts during slow camera movement unreal-engine	0	11	June 9, 2026
Isolated colored light spots appear/disappear in lighting/reflection views unreal-engine	0	13	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	43	June 9, 2026
High-frequency stripe material shimmers and destabilizes nearby reflections unreal-engine	0	13	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	12	June 9, 2026
Emissive objects leave ghosted/flickering contributions in mirror reflections unreal-engine	0	13	June 9, 2026
Landscape painting Roughness texture issue - Roughness not applying correctly question , unreal-engine , landscape-painting	1	26	June 9, 2026
My twinmotion characters and animated objects flicker like hell! question , bug-report , twinmotion	0	9	June 9, 2026
Need Shadow Catcher / Matte Shadow Rendering , unreal-engine	21	3814	June 9, 2026
MegaLights feedback thread Lighting , Rendering , unreal-engine , MegaLights	337	20540	June 9, 2026
Path Tracing Render Crashes on Large Project (RTX 4080 Super, 64GB RAM) question , unreal-engine	10	480	June 8, 2026
[UE5.7] Heterogeneous Volumes - Border artifacts unreal-engine	0	26	June 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…