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…	2334	140687	February 4, 2026
RAD Game Tools’ Oodle—cross-platform data compression solutions unreal-engine	29	15336	November 17, 2021
Texture never released from memory when using common activatable widget question , unreal-engine , Epic-Pro-Support	3	10	February 5, 2026
How do you blur the edges of a voronoi noise texture? Blueprint , question , Rendering , unreal-engine	9	104	February 5, 2026
Flick appears in my render question , Rendering , unreal-engine	1	16	February 5, 2026
Nothing that I do solves the IDIOTIC Reflection Problem question , Reflections , Rendering , unreal-engine , glass , Water , Ray-Tracing , ocean , Raytracing	19	45	February 5, 2026
RTX mirror reflections not accurate despite setting all relevant settings to high UE4-26 , unreal-engine	3	587	February 5, 2026
Rendering alpha with .exr file not working UE5.7.1 question , unreal-engine	1	32	February 5, 2026
Trying to bring RTXGI to 5.7 unreal-engine	11	1405	February 4, 2026
Weird and awful shadows in UE4.27 question , Shadows , unreal-engine , Lightmap	1	13	February 4, 2026
Packed Level Actors and Occlusion Culling/ Frustum Culling unreal-engine	2	20	February 4, 2026
Hello, I can't open a widget blueprint. It's impossible. Blueprint , question , bug-report , bug , unreal-engine , unreal-editor-for-fortnite	1	17	February 4, 2026
Impact Decals on Translucent Materials/Simulating depth rendering on Translucent materials Blueprint , question , unreal-engine	0	8	February 4, 2026
Sky Atmosphere is straight up black and won't change question , Lighting , unreal-engine , UE5-0	40	22268	February 4, 2026
GPU lightmass broken GI bounce in UE5.7 unreal-engine	0	19	February 4, 2026
No panorama set appears in Twinmotion 2025.2 twinmotion	0	9	February 4, 2026
Light going through walls question , Lighting , unreal-engine , lighting-problem	12	44	February 4, 2026
Epic's GPUlightmass unreal-engine	826	69691	February 3, 2026
Bad raytraced shadows with voxelised Nanite Foliage in 5.7 question , Foliage , unreal-engine , shadows-problem , Raytracing	8	85	February 3, 2026
Splitscreen camera glitch Blueprint , question , Rendering , unreal-engine	0	4	February 3, 2026
UE 5.5 -> UE 5.7 Megalights issue question , unreal-engine	28	1137	February 3, 2026
camera jitter problem when following an object question , unreal-engine	0	8	February 3, 2026
How blending post process materials works and simple setup process unreal-engine	3	1274	February 3, 2026
Substrate Toon Material BSDF node unreal-engine	1	41	February 3, 2026
UE Water plugin not appearing properly in reflection question , unreal-engine	1	297	February 3, 2026
How set the Landscape extent/size to 2048 (Gaea -> UE5 workflow) question , unreal-engine	0	6	February 3, 2026
Time Dilation - Movie render Queue question , unreal-engine	1	184	February 3, 2026
Path Tracer not rendering emissive fog unreal-engine , emissive , volumetric-fog , Path-Tracer	0	16	February 3, 2026
Material Parameter Collection Not Updating Post Processing. question , Rendering , unreal-engine	0	7	February 3, 2026
How to loop a pattern node? question , unreal-engine	1	15	February 2, 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…

2334

140687

February 4, 2026

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

unreal-engine

29

15336

November 17, 2021

Texture never released from memory when using common activatable widget

question , unreal-engine , Epic-Pro-Support

3

10

February 5, 2026

How do you blur the edges of a voronoi noise texture?

Blueprint , question , Rendering , unreal-engine

9

104

February 5, 2026

Flick appears in my render

question , Rendering , unreal-engine

1

16

February 5, 2026

Nothing that I do solves the IDIOTIC Reflection Problem

question , Reflections , Rendering , unreal-engine , glass , Water , Ray-Tracing , ocean , Raytracing

19

45

February 5, 2026

RTX mirror reflections not accurate despite setting all relevant settings to high

UE4-26 , unreal-engine

3

587

February 5, 2026

Rendering alpha with .exr file not working UE5.7.1

question , unreal-engine

1

32

February 5, 2026

Trying to bring RTXGI to 5.7

unreal-engine

11

1405

February 4, 2026

Weird and awful shadows in UE4.27

question , Shadows , unreal-engine , Lightmap

1

13

February 4, 2026

Packed Level Actors and Occlusion Culling/ Frustum Culling

unreal-engine

2

20

February 4, 2026

Hello, I can't open a widget blueprint. It's impossible.

Blueprint , question , bug-report , bug , unreal-engine , unreal-editor-for-fortnite

1

17

February 4, 2026

Impact Decals on Translucent Materials/Simulating depth rendering on Translucent materials

Blueprint , question , unreal-engine

0

8

February 4, 2026

Sky Atmosphere is straight up black and won't change

question , Lighting , unreal-engine , UE5-0

40

22268

February 4, 2026

GPU lightmass broken GI bounce in UE5.7

unreal-engine

0

19

February 4, 2026

No panorama set appears in Twinmotion 2025.2

twinmotion

0

9

February 4, 2026

Light going through walls

question , Lighting , unreal-engine , lighting-problem

12

44

February 4, 2026

Epic's GPUlightmass

unreal-engine

826

69691

February 3, 2026

Bad raytraced shadows with voxelised Nanite Foliage in 5.7

question , Foliage , unreal-engine , shadows-problem , Raytracing

8

85

February 3, 2026

Splitscreen camera glitch

Blueprint , question , Rendering , unreal-engine

0

4

February 3, 2026

UE 5.5 -> UE 5.7 Megalights issue

question , unreal-engine

28

1137

February 3, 2026

camera jitter problem when following an object

question , unreal-engine

0

8

February 3, 2026

How blending post process materials works and simple setup process

unreal-engine

3

1274

February 3, 2026

Substrate Toon Material BSDF node

unreal-engine

1

41

February 3, 2026

UE Water plugin not appearing properly in reflection

question , unreal-engine

1

297

February 3, 2026

How set the Landscape extent/size to 2048 (Gaea -> UE5 workflow)

question , unreal-engine

0

6

February 3, 2026

Time Dilation - Movie render Queue

question , unreal-engine

1

184

February 3, 2026

Path Tracer not rendering emissive fog

unreal-engine , emissive , volumetric-fog , Path-Tracer

0

16

February 3, 2026

Material Parameter Collection Not Updating Post Processing.

question , Rendering , unreal-engine

0

7

February 3, 2026

How to loop a pattern node?

question , unreal-engine

1

15

February 2, 2026

Development Rendering