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…	2327	139564	January 8, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15302	November 17, 2021
HLOD error on Lightmass build: Instanced meshes don’t yet support unique static lighting for each LOD question , unreal-engine	2	7	January 24, 2026
exact 'first person: world space representation' requirements? question , unreal-engine	2	8	January 24, 2026
GPU Lightmass Error: Array index out of bounds question , crash , Lightmass , unreal-engine , gpu-lightmass	0	6	January 24, 2026
Is Nanite Tessellation broken on terrain in 5.6 ? question , unreal-engine	10	698	January 23, 2026
Unreal 5.7 RayTracing Crash question , crash , Rendering , unreal-engine , Ray-Tracing	9	358	January 23, 2026
Light Function Material - Line through texture question , unreal-engine	0	12	January 23, 2026
Simulate SSAO with Forward Shading? question , Rendering , unreal-engine	2	12	January 23, 2026
When i am doing the rendering my Image export quality does not seems good, every time it is like this. question , twinmotion	0	0	January 23, 2026
Lumen/AA flickering unreal-engine	7	45	January 23, 2026
Problem with flickering shadows in Unreal Engine 5 when using global illumination not in Lumen mode question , editor , bug-report , Rendering , unreal-engine	38	21801	January 23, 2026
How to draw a 'outline/wireframe' of specific edges/corners of mesh? unreal-engine	2	2234	January 23, 2026
My UE5.7 project is stuck loading as 92%. How do I fix it? Blueprint , question , editor , crash , bug-report , unreal-engine	2	9	January 23, 2026
Single Layer Water broken in VR with stereo instancing unreal-engine	4	479	January 23, 2026
Accessing View struct from custom .usf shader causes undeclared identifier error question , Shaders , unreal-engine , shader	3	23	January 23, 2026
"Find Collision UV" always returns zero for Skeletal Meshes Blueprint , question , collision-responses , skeletalmesh , uv , unreal-engine , Trace	54	8897	January 22, 2026
UE4 Non PiP Scopes Rendering , unreal-engine	1	289	January 22, 2026
Our team has built WebGPU support, available for UE 5.6 - link below unreal-engine	0	10	January 22, 2026
Issue with pixelated specular on mesh edges question , Lighting , Rendering , unreal-engine , lighting-problem	0	10	January 22, 2026
Epic's GPUlightmass unreal-engine	821	69092	January 22, 2026
Particles work everywhere except when placed as an Animation Notify unreal-engine	3	2318	January 22, 2026
UE 5.5 -> UE 5.7 Megalights issue question , unreal-engine	23	919	January 22, 2026
Feedback wanted: Materials & Lighting review for TCG card game Rendering , unreal-engine , emissive , parallax	4	29	January 22, 2026
What cause black spot on skeletal mesh? question , unreal-engine	3	26	January 22, 2026
Why does the Panner node produce artifacts at high values? Blueprint , question , Rendering , unreal-engine	8	40	January 22, 2026
City Sample in UE5.4 flickering artifact Rendering , unreal-engine	3	215	January 22, 2026
How can I change the brightness with a slider? Blueprint , question , unreal-engine , options , brightness , slider	38	16441	January 22, 2026
Is there a way I can disable the atmospheric sun light for everything but the backgroun? question , Rendering , unreal-engine , light	2	22	January 22, 2026
Transparent Materials in Movie Render Graph Object IDs question , bug-report , unreal-engine , Render-Pipeline	12	212	January 22, 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…