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	165732	July 25, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	16249	November 17, 2021
Ray Tracing PSO Issue with Imported Mesh question , unreal-engine , Path-Tracing	7	72	October 6, 2026
How do I get a "fake retro" washed-out look in UE5.7 with fully dynamic lighting, without it looking photorealistic? question , Rendering , Graphics , unreal-engine , lightning	1	19	October 6, 2026
Crash when hitting play after re-loading World Partition level with Static Lighting crash , unreal-engine	3	200	October 6, 2026
Material not rendering properly question , unreal-engine	1	40	October 6, 2026
UE5 Render Target looks weird question , unreal-engine	6	151	October 5, 2026
Lumen Reflections crash FIX - SBT Corruption in GPU Copy Queue question , Rendering , unreal-engine , Ray-Tracing	0	6	October 5, 2026
Simulating Astigmatism in Unreal Engine question , unreal-engine	2	59	October 5, 2026
How to Vertex Snap in Unreal Engine 5? question , Landscape , unreal-engine , model , vertex , position , snapping	5	2905	October 5, 2026
Why vertex snapping works so badly in the editor? question , editor , unreal-engine , vertex , snapping	3	559	October 5, 2026
UE 5.7 – Foliage/Grass materials look extremely dark on the unlit side and bad lighting consistency question , Foliage , unreal-engine , lightning	3	48	October 5, 2026
TSR ghosting against a VolumetricCloud the player stands inside — every rejection knob measured, none help question , unreal-engine	0	10	October 5, 2026
Bug Report: GPU remains idle (0-1%) and render time stalls when exporting Lumen video with MP4 video textures twinmotion	0	10	October 5, 2026
How to scale correctly an User Interface material? Blueprint , question , Shaders , UI , Rendering , unreal-engine	2	85	October 4, 2026
smoth corners - round edges on materials unreal-engine	19	25307	October 3, 2026
Consistent GPU crash after upgrading to 5.8 unreal-engine	9	636	October 2, 2026
Help rendering god rays, caustics, and underwater scenes question , unreal-engine	0	21	October 2, 2026
Make Nanite Tessellation ignore object scale question , unreal-engine	8	682	October 2, 2026
UE5.8 Procedural Vegetation/Megaplants Shadow Cache Invalidation unreal-engine	2	59	October 2, 2026
Emissive not rendering on a transparent background PNG with movie render queue question , Rendering , unreal-engine , logo , Render , alpha , emissive , sequence , png	12	155	October 1, 2026
How to make glowing assets appear in the engine question , unreal-engine	1	35	October 1, 2026
UE5 Translucency Reflections Limitation or bug? question , bug-report , Rendering , unreal-engine	21	2371	October 1, 2026
Rendering a sprite infront of a certain mesh Blueprint , question , unreal-engine	3	48	October 1, 2026
How do I remove ambient occlusion dithering? question , unreal-engine	1	46	September 30, 2026
How can UE 5.5.4 reliably attribute controller-driven Niagara GPU smoke activity to specific systems and correlate it with CSV Profiler captures for automated regression testing? question , unreal-engine	0	27	September 29, 2026
Epic's GPUlightmass unreal-engine	1032	88166	September 29, 2026
Incorrect Rendering results with Negative Scale When Using Packaged Level Actor / FastGeo ISMTransformer unreal-engine , hism	0	25	September 29, 2026
Megascans trees with nanite and virtual shadow maps glitch Nanite , Shadows , unreal-engine , trees , Raytracing , Megascans	5	907	September 28, 2026
invisible objects/part of objects behind a invisible wall Blueprint , question , Rendering , unreal-engine , transparency	5	1903	September 28, 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…