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…	2355	146111	March 26, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15515	November 17, 2021
When r.RayTracing.Shadows.Translucency is enabled, the directional light source angle causes distant shadows to blur and fade out. question , unreal-engine	3	27	April 21, 2026
Are shadows on translucent material really not possible? question , Lighting , Shadows , translucent , unreal-engine , transparency , Water	8	6285	April 21, 2026
Movie Render Graph and Object Ids in 5.5.1 unreal-engine , graph	15	998	April 21, 2026
Foliage Grass flickering in the shadow UE5 Lumen Lumen , question , Rendering , unreal-engine , UE5-0	13	8398	April 21, 2026
nDisplay – Previewing the warped/projected render in-editor during PIE? unreal-engine , interactive-objects , projection , pie , editor-viewports , ndisplay	0	8	April 21, 2026
Epic's GPUlightmass unreal-engine	882	73296	April 21, 2026
Water material looks different in Editor and built application unreal-engine	1	291	April 21, 2026
UE5.4 shadow flickering/jitter on meshes at distance and in profile view unreal-engine	2	29	April 21, 2026
Substrate - Feedback Thread Rendering , unreal-engine , Physically-Based-Shading , Staff-Pick-UE , Substrate	783	42689	April 20, 2026
Mesh edge pixelated question , unreal-engine	1	35	April 20, 2026
Why is the Nanite VRAM Cache hardcoded to NVIDIA 2GB vs AMD 4GB? Nanite , question , CPP , Rendering , unreal-engine	2	285	April 20, 2026
My lighting dissapears when rendering out from sequenncer question , unreal-engine	2	31	April 20, 2026
Why does Lumen produce different initial lighting results when reopening an Unreal Engine project? Lumen , question , Rendering , unreal-engine , ao	5	53	April 20, 2026
Frame drops while rotating camera even with empty level question , unreal-engine	4	51	April 20, 2026
Light Visibility Through Glass Objects/Materials Lighting , Rendering , refraction , unreal-engine , light , glass , Path-Tracing , Path-Tracer	4	2307	April 20, 2026
Substrate Automotive - Coated materials produce NaN/bad pixel unreal-engine , Render , Substrate	3	44	April 20, 2026
How to Offset ReflectionVectorWS question , Reflections , unreal-engine	9	201	April 20, 2026
Windy foliage jittering in Path Tracer unreal-engine	1	23	April 20, 2026
Path Tracer keeps invalidating samples after switching to one of the "Geom. Inspect." viewmodes question , unreal-engine	0	18	April 20, 2026
UE 5.7 – Substrate + Clear Coat + Lumen HWRT causes colorfill square artifact question , bug-report , unreal-engine	2	49	April 19, 2026
Transparent (Masked) textures turn white at a distance. question , Textures , transparent , unreal-engine , masked	2	631	April 19, 2026
NOT Solved. Pixelated DOF issue on out of focus objects close to the camera when rendering through Movie Render Queue. (UE 5.6) unreal-engine	10	519	April 18, 2026
smooth/sharp edges on RenderTarget/Texture2D question , unreal-engine	0	13	April 18, 2026
How to combine World Aligned Texture with Parallax Occulsion Offset? question , unreal-engine	2	30	April 18, 2026
More Lighting Channels FeatureRequest , question , Lighting , unreal-engine , engine	4	41	April 17, 2026
The light radius setting has stopped working in my sceme. I only have very sharp shadows. twinmotion	0	22	April 17, 2026
The radius setting in my lights has stopped working. I only have sharp shadows question , twinmotion	0	8	April 17, 2026
[PROBLEM] Asset become "transparent" with lots of dots in the default light? unreal-engine	1	21	April 17, 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…