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…	2354	144662	March 23, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15458	November 17, 2021
After changing RHI to vulkan, this happen unreal-engine	4	50	March 24, 2026
Imported font vertical alignment issues question , slate , import , unreal-engine , font , UMG	7	2247	March 24, 2026
Where does Nanite decide it needs to batch draw calls? question , unreal-engine	2	17	March 24, 2026
Epic's GPUlightmass unreal-engine	878	72114	March 24, 2026
Precomputed Visibility simply not working question , unreal-engine , Epic-Pro-Support	6	23	March 24, 2026
[5.5.3] Lumen Bounce Light in SceneCaptureComponent2D Lumen , question , Global-Illumination , unreal-engine , scenecapturecomponen	3	25	March 24, 2026
Blue semi‑circle tint at bottom of image question , unreal-engine , Render	0	10	March 24, 2026
Path Trace DOF pass bug question , unreal-engine , Render-Passes	1	33	March 24, 2026
Conditionally Disable Tone Mapping Using Custom Stencil question , unreal-engine , Epic-Pro-Support	2	89	March 24, 2026
5.7.x - Substrate - Movie Render Queue - Shader Compile Fails every frame - Stutter question , bug-report , unreal-engine	0	10	March 24, 2026
Scene looks different in Android/Quest preview vs Desktop (emissive color and lighting issue) question , unreal-engine	2	15	March 24, 2026
Bug in VR Since 5.6 (and 5.7 preview) with Instanced Stereo + Baked Reflection Capture + Deferred Rendering + Post Process Volume unreal-engine	14	619	March 24, 2026
Why does my image look like it’s been infected with a virus when I switch to Lumen Scene mode instead of Lit mode? question , unreal-engine	0	9	March 24, 2026
Problem with spawning grass in UE5 out of control question , unreal-engine	1	15	March 24, 2026
Why does the sphere rendered by my shader code on the model appear distorted (not a perfect circle), especially at the edges/corners of the model? question , unreal-engine , shader	2	22	March 24, 2026
Programming Render in Movie Render Graph unreal-engine	0	5	March 24, 2026
5.7 Landscape paint layer blend issue question , unreal-engine	13	909	March 23, 2026
Lumen tracing reflection rays on Unlit materials question , unreal-engine	2	28	March 23, 2026
RVT Fixed Pool size in Megabyte capped at 500 unreal-engine	0	10	March 23, 2026
God rays not showing or Problem with getting volumetric shadows with raytraced shadows activated on the directional light! question , Lighting , Rendering , unreal-engine , UE5-0	8	5561	March 23, 2026
Physical Material Masks? unreal-engine	23	13375	March 23, 2026
How to light this level question , unreal-engine	1	35	March 22, 2026
Editor suddenly using all system RAM question , crash , unreal-engine , debug , ram	11	641	March 22, 2026
Movie Render Queue vs Viewport unreal-engine	0	6	March 22, 2026
Weird Difference Between SM5 and SM6? question , unreal-engine	5	78	March 22, 2026
What happened to the Instanced Static Mesh performance in UE5? question , Rendering , unreal-engine	15	1695	March 22, 2026
How to Get rid of the "Unreal Look"? question , unreal-engine	14	176	March 22, 2026
UE 5.7.x Linux – VK_ERROR_DEVICE_LOST in Vulkan RHI question , unreal-engine	7	270	March 21, 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…