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Lumen GI and Reflections feedback thread
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…
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2327
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139422
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January 8, 2026
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RAD Game Tools’ Oodle—cross-platform data compression solutions
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29
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15299
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November 17, 2021
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MetaHuman hair ghosting when moving + hair appears see-through
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0
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3
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January 21, 2026
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What cause black spot on skeletal mesh?
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1
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17
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January 21, 2026
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Feedback wanted: Materials & Lighting review for TCG card game
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2
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13
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January 21, 2026
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Seams on multi-part skeletal character
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13
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4564
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January 21, 2026
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Lumen/AA flickering
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5
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14
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January 21, 2026
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Distance fields issue
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8
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134
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January 21, 2026
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how do i get rid of these artifacts
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3
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9
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January 21, 2026
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Transparent Materials in Movie Render Graph Object IDs
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9
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204
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January 21, 2026
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How to enable OCIO in Play in Editor mode?
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3
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996
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January 21, 2026
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OCIO for real-time (game)
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1
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46
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January 21, 2026
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UE 5.7 Pathtracer Fatal error in large scenes
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4
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182
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January 21, 2026
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How to get source file path from UTexture?
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5
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2375
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January 21, 2026
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Substrate - Feedback Thread
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754
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39901
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January 21, 2026
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Optimising fire in UE 5.7
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3
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27
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January 21, 2026
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[D3D12] ResourceBarrier State Mismatch Error in DispatchRays (Lumen + RDG)
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1
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13
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January 21, 2026
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UE 5.5 Heterogeneous Volumes (with VDB) issues
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1
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316
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January 21, 2026
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Is there a way to render in (near) real time with Movie Render Queue (as if capturing the level?)
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4
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458
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January 20, 2026
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whats wrong with shadows?
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3
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25
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January 20, 2026
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Niagara Fluid not rendering when using Movie Render Queue
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9
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5802
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January 20, 2026
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Ocean body renders in front of clouds
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4
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42
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January 20, 2026
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How to runtime change frame generation method? How to recreate the window at runtime?
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4
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52
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January 20, 2026
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How to adjust a texture's color levels?
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5
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7402
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January 20, 2026
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Does the CustomDepth have different precision in the forward renderer?
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2
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1037
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January 20, 2026
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Does 3PointLevels node always outputs grayscale image?
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1
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773
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January 20, 2026
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Feature Request: Adjustable Outline Thickness After Recent Update
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1
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41
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January 20, 2026
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Why does the Panner node produce artifacts at high values?
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7
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26
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January 20, 2026
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Rendering Sequence comes out black
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16
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16572
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January 20, 2026
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Performance comparison: NIagara Binding Options vs. Swapping Material Instances (Mobile & PC)
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0
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14
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January 20, 2026
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