Lumen Noise 💡, Faster Blur 🫥, Read-Only Data Editor ✍️
Oct 2, 2026
Graphics & Rendering 🎨
Reducing Lumen noise with local lights and temporal filtering
Aleksander Goryachev reduces Lumen noise in his closed Unreal Engine 5 hospital environment by controlling emissive contributions and manually placing lights to simulate indirect illumination. He disables Screen Space Traces, simulates window lighting with local sources, and adds shadowless fill lights in deep rooms and corridors. Increasing temporal accumulation from 10 to 16 frames improves stability in this scene but risks ghost...