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…	2339	141442	February 11, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15350	November 17, 2021
Unreal 5 "Panoramic Rendering" making cryptomattes non-panorama question , Rendering , unreal-engine , UE5-0	2	398	February 11, 2026
nDisplay not possible on high refresh rate HDMI TVs? unreal-engine	0	5	February 11, 2026
Water Foam in 3D FLIP System not showing question , Rendering , unreal-engine , fluid , Fluids	0	8	February 10, 2026
Artefacting between meshes using the same translucent glass material question , Rendering , unreal-engine	1	19	February 10, 2026
Need a way to have lights in child actors or scene components bake static lighting question , unreal-engine	3	21	February 10, 2026
Anti-Aliasing Causing Grainy Shadows and Textures in Motion question , unreal-engine	1	11	February 10, 2026
Water Depth Effects in Unreal Engine: Deformation, Blur, and Visual Clarity unreal-engine	0	9	February 10, 2026
Rendu des reflets sur Mac Apple Silicon twinmotion	0	6	February 10, 2026
Error during custom RayTracer Shader initialization unreal-engine	3	124	February 10, 2026
Volumetric Fog issues with Flashlight (SpotLight) question , Lighting , Rendering , unreal-engine , volumetric-fog	1	16	February 10, 2026
UE5.6 TSR DOF BUG question , unreal-engine , Epic-Pro-Support	15	88	February 10, 2026
Epic's GPUlightmass unreal-engine	830	69991	February 10, 2026
Use cases for Vertex Painting and Texture Color? question , unreal-engine	3	22	February 10, 2026
Trying to bring RTXGI to 5.7 unreal-engine	17	1534	February 10, 2026
Rect Light Reflections in RayTraced Translucency unreal-engine , Ray-Tracing , translucency	0	13	February 10, 2026
Render thread hitches on mip streaming for particle systems question , unreal-engine , Epic-Pro-Support	7	246	February 10, 2026
How do I get accurate and performant coastal reflections? question , unreal-engine	0	17	February 10, 2026
Glass reflects the window itself question , bug-report , Rendering , unreal-engine , window , glass , reflection	9	2914	February 10, 2026
Light Function Material - Line through texture question , unreal-engine	1	35	February 9, 2026
Packed Level Actors and Occlusion Culling/ Frustum Culling unreal-engine	3	38	February 9, 2026
How to force BC1 texture compression? question , Textures , unreal-engine , compression	2	533	February 9, 2026
Best Practices for Optimizing Niagara VFX for Performance in UE5 question , unreal-engine	6	705	February 9, 2026
Ghosting and shadows problem question , unreal-engine	4	33	February 9, 2026
Static Lights look strange after upgrading from 5.4 to 5.6 question , unreal-engine	6	56	February 9, 2026
Angled Walls Not Lighting? question , unreal-engine	1	26	February 9, 2026
Overlay Material not working on Static Meshes unreal-engine	7	3303	February 9, 2026
How do I get rid of these black metallic splotches on my textures? question , unreal-engine	1	27	February 9, 2026
Render Queue mesh disappears HELP question , Rendering , unreal-engine	5	1692	February 9, 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…

2339

141442

February 11, 2026

RAD Game Tools’ Oodle—cross-platform data compression solutions

unreal-engine

29

15350

November 17, 2021

Unreal 5 "Panoramic Rendering" making cryptomattes non-panorama

question , Rendering , unreal-engine , UE5-0

2

398

February 11, 2026

nDisplay not possible on high refresh rate HDMI TVs?

unreal-engine

0

5

February 11, 2026

Water Foam in 3D FLIP System not showing

question , Rendering , unreal-engine , fluid , Fluids

0

8

February 10, 2026

Artefacting between meshes using the same translucent glass material

question , Rendering , unreal-engine

1

19

February 10, 2026

Need a way to have lights in child actors or scene components bake static lighting

question , unreal-engine

3

21

February 10, 2026

Anti-Aliasing Causing Grainy Shadows and Textures in Motion

question , unreal-engine

1

11

February 10, 2026

Water Depth Effects in Unreal Engine: Deformation, Blur, and Visual Clarity

unreal-engine

0

9

February 10, 2026

Rendu des reflets sur Mac Apple Silicon

twinmotion

0

6

February 10, 2026

Error during custom RayTracer Shader initialization

unreal-engine

3

124

February 10, 2026

Volumetric Fog issues with Flashlight (SpotLight)

question , Lighting , Rendering , unreal-engine , volumetric-fog

1

16

February 10, 2026

UE5.6 TSR DOF BUG

question , unreal-engine , Epic-Pro-Support

15

88

February 10, 2026

Epic's GPUlightmass

unreal-engine

830

69991

February 10, 2026

Use cases for Vertex Painting and Texture Color?

question , unreal-engine

3

22

February 10, 2026

Trying to bring RTXGI to 5.7

unreal-engine

17

1534

February 10, 2026

Rect Light Reflections in RayTraced Translucency

unreal-engine , Ray-Tracing , translucency

0

13

February 10, 2026

Render thread hitches on mip streaming for particle systems

question , unreal-engine , Epic-Pro-Support

7

246

February 10, 2026

How do I get accurate and performant coastal reflections?

question , unreal-engine

0

17

February 10, 2026

Glass reflects the window itself

question , bug-report , Rendering , unreal-engine , window , glass , reflection

9

2914

February 10, 2026

Light Function Material - Line through texture

question , unreal-engine

1

35

February 9, 2026

Packed Level Actors and Occlusion Culling/ Frustum Culling

unreal-engine

3

38

February 9, 2026

How to force BC1 texture compression?

question , Textures , unreal-engine , compression

2

533

February 9, 2026

Best Practices for Optimizing Niagara VFX for Performance in UE5

question , unreal-engine

6

705

February 9, 2026

Ghosting and shadows problem

question , unreal-engine

4

33

February 9, 2026

Static Lights look strange after upgrading from 5.4 to 5.6

question , unreal-engine

6

56

February 9, 2026

Angled Walls Not Lighting?

question , unreal-engine

1

26

February 9, 2026

Overlay Material not working on Static Meshes

unreal-engine

7

3303

February 9, 2026

How do I get rid of these black metallic splotches on my textures?

question , unreal-engine

1

27

February 9, 2026

Render Queue mesh disappears HELP

question , Rendering , unreal-engine

5

1692

February 9, 2026

Development Rendering