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	149691	May 22, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15622	November 17, 2021
Baked volumetric lightmap has lower quality than 5.8 lumen Irradiance field question , unreal-engine	2	22	June 7, 2026
Scene Capture 2D transparent background question , unreal-engine , transparency , Scene-Capture , UMG	11	10928	June 7, 2026
Trim progress bar using alpha question , unreal-engine	2	64	June 7, 2026
Can 4.5 Video Textures support alpha channels? question , texture , unreal-engine , alpha , video , channel , Media-Framework	18	5420	June 7, 2026
Colorful dots in render question , unreal-engine	4	75	June 7, 2026
Windy foliage jittering in Path Tracer unreal-engine	2	49	June 7, 2026
TAA + Screen Space GI causes reflected light to flicker on glossy surfaces unreal-engine	0	10	June 7, 2026
Subsurface profile opacity texture map doesn't work with grayscale but only black and white, why? question , unreal-engine	0	10	June 7, 2026
Volumetric Clouds flickering while game is paused question , Rendering , unreal-engine , Volumetric-Clouds	3	371	June 7, 2026
Path Tracing Render Crashes on Large Project (RTX 4080 Super, 64GB RAM) question , unreal-engine	9	454	June 6, 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	0	16	June 6, 2026
Rendering Crash in 5.7 - PreshadowCacheLayout.RemoveElement question , crash , Shadows , please-help-me , unreal-engine	6	91	June 6, 2026
Volume material is complitely transparent question , UE4 , Rendering , unreal-engine	2	467	June 5, 2026
Strange shadows question , unreal-engine	1	51	June 5, 2026
Square Artifacts at edges of Area Lights question , Shadows , dynamic-lighting , unreal-engine , lighting-problem , Forward-Rendering , rendering-artifact	0	24	June 4, 2026
Unreal Editor and Packaged Build different results Blueprint , question , editor , CPP , unreal-engine	1	30	June 4, 2026
Enable Per-ActorCC in ColorCorrectionRegion feature does not work question , editor , unreal-engine	2	76	June 4, 2026
UE 5.7.x Linux – VK_ERROR_DEVICE_LOST in Vulkan RHI question , unreal-engine	13	872	June 3, 2026
Light movement ? Turn off / on? question , Rendering , twinmotion	1	48	June 3, 2026
Landscape spline performance questions question , fortnite , unreal-editor-for-fortnite , fortnite-creative	0	14	June 3, 2026
Twinmotion VR question , twinmotion	0	13	June 3, 2026
Twinmotion VR + goggles question , twinmotion	0	7	June 3, 2026
UE 5.5 Heterogeneous Volumes (with VDB) issues question , bug-report , Rendering , unreal-engine	2	470	June 3, 2026
灯光效果,打包平台间的差异，pc和安卓不能为什么效果效果差别这么大 unreal-engine	0	23	June 3, 2026
substrate materials wont let me bake gi question , unreal-engine	13	240	June 2, 2026
Overlapping transparent materials are cancelling each other out question , unreal-engine	6	78	June 2, 2026
Different results when running same packaged builds on different PCs question , bug-report , unreal-engine	2	41	June 2, 2026
Unreal Engine 5 & VR - Metahuman Hair randomly spawned in Right Eye question , Rendering , unreal-engine	1	109	June 2, 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…