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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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December 18, 2025
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RAD Game Tools’ Oodle—cross-platform data compression solutions
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November 17, 2021
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Materials on large landscapes look jagged and pixelated
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December 24, 2025
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Core i5 14400 vs i5 14600k for Unreal Engine 5?
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December 24, 2025
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Black blotches on nanite in 5.7
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December 24, 2025
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Helicopter Rotor Motion Blur
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December 24, 2025
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Left Eye Shadow Flickering in VR with Virtual Shadow Maps
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1569
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December 24, 2025
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How Can I available the Path Tracer?
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0
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December 24, 2025
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ShadowDepths in GPU visualizer hurting performance
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47665
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December 24, 2025
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Substrate - Feedback Thread
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37520
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December 23, 2025
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Unreal 5.6.1 Path Tracer is not rendering ShallowWaterRiver
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December 23, 2025
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Rapid Progressive Clustering by Geometry Quantization (POP buffers)
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7
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December 23, 2025
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I can't figure out the cause of this flickering
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1310
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December 23, 2025
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How to block some parts of the directional light?
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December 23, 2025
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[Request] Improved Colors and Tone mapper
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December 23, 2025
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Editor flicker
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December 23, 2025
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Depth of Field Glitch / Bug in Unreal 5.7
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December 23, 2025
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How can I remove Shadow Artifacts on my Landscape produced by Nanite Tesselation?
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59
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December 23, 2025
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After baking lighting, map crashes attempting to open
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135
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December 23, 2025
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Some objects are black
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December 22, 2025
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Hot to get rid of this flickering effect in my render.
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December 22, 2025
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PSO collection & integration in UE5.5+
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December 22, 2025
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Rect Lights - barns not working on static lights - ies profile not working
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December 22, 2025
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Sun flickering (directional light)
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December 22, 2025
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My FOV seems to be locked to 170 and it won't let me change it?
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December 22, 2025
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weird black lines shapes and artifacts in final render
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December 22, 2025
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Jittery and pixelated volumetric clouds
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296
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December 22, 2025
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Trying to bring RTXGI to 5.7
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December 22, 2025
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Is Nanite Tessellation broken on terrain in 5.6 ?
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December 21, 2025
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VDB Heterogeneous Volume Sorting/Occlusion Issues with Opaque Geometry
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December 21, 2025
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