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	150927	May 22, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15645	November 17, 2021
Global Shader compilation and bundled PSOs usage question , compiling , Shaders , UI , unreal-engine , shader	0	7	June 13, 2026
Assist with Visual Technique used in the game Lords of the Fallen (2023) question , unreal-engine	1	15	June 13, 2026
UE 5.7.x Linux – VK_ERROR_DEVICE_LOST in Vulkan RHI question , unreal-engine	14	958	June 13, 2026
I can't find the engine scalability settings anywhere so can someone help? question , editor , unreal-engine	8	3071	June 13, 2026
Post Process Input 0 masking Elements question , fortnite , unreal-editor-for-fortnite , fortnite-creative	0	7	June 13, 2026
SceneCaptureComponent2D not applying CineCamera's focal settings correctly UE4-26 , question , unreal-engine , DOF , Scene-Capture	2	943	June 12, 2026
Movie Render Queue vs Legacy Render Movie UE5 question , unreal-engine	1	33	June 12, 2026
Physical Material Masks? unreal-engine	25	13703	June 12, 2026
How do i make a Compression Artifact post-process like Imperfecter? Post-Processing , unreal-engine	2	32	June 11, 2026
Epic's GPUlightmass unreal-engine	922	76771	June 11, 2026
Viewports turned black after dropping sprite into content broswer question , bug-report , unreal-engine	4	61	June 11, 2026
Black Render on second launch after integrating bundled PSO cache question , unreal-engine	0	14	June 11, 2026
Lighting Flickers When Using Color Quantization in Post Process Material question , unreal-engine	0	22	June 10, 2026
Camera Shift / Vertical perspective issue in Archviz question , Camera , Rendering , unreal-engine , perspective , camera-view	3	1610	June 10, 2026
UE5.7 Enabling Path Tracer Adaptive Sampling causes movie render to crash question , unreal-engine	0	22	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	52	June 10, 2026
Twin 2026.1 HF crashed - TwinmotionCoockedEditor_Win64_Shipping question , twinmotion	1	62	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	12	June 9, 2026
How do I prevent an emissive material from lighting the environment? question , unreal-engine	1	45	June 9, 2026
Screen Space GI with TAA produces temporally unstable speckle noise unreal-engine	1	30	June 9, 2026
Material/local shading jitters during camera pulse movement unreal-engine	0	30	June 9, 2026
Light/volumetric contribution flickers during camera movement unreal-engine	0	25	June 9, 2026
SceneCapture2D appears to cause main viewport flicker in a static scene unreal-engine	0	17	June 9, 2026
Spotlight contribution shows ring/banding artifacts during slow camera movement unreal-engine	0	17	June 9, 2026
Isolated colored light spots appear/disappear in lighting/reflection views unreal-engine	0	16	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	48	June 9, 2026
High-frequency stripe material shimmers and destabilizes nearby reflections unreal-engine	0	17	June 9, 2026
Decals pop in/out during camera movement unreal-engine	0	9	June 9, 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…