Lumen Hit Lighting Reflections
Enable the Support Hardware Ray Tracing and the Hit Lighting for Reflections options in the Project Settings to achieve near Ray Tracing levels of...

Enable the Support Hardware Ray Tracing and the Hit Lighting for Reflections options in the Project Settings to achieve near Ray Tracing levels of reflection quality for Lumen.
Do note that enabling this will impact GPU performance.
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06/More Tips
Regulate Emissive ExposureUtilize the EyeAdaption node to keep emissive materials consistency across difference exposure levels.
Materials
Lighting
+1
Lighting ChannelsUtilize Lighting Channels to fine-tune what components are illuminated by what lights.
Lighting
Atmospheric Sun Rotation ShortcutThe rotation of the Atmospheric Sun Light can be easily modified by holding CTRL + L and moving around the mouse.
Viewport
Lighting
+1
The Preview MeshHold the BACKSLASH shortcut to display the Preview Mesh under the mouse's current location within the Editor viewport.
Viewport
Shortcuts
+2
Toggle Light Radius IndicatorYou can toggle the light radius indicator on or off by holding down ALT and pressing R.
Lighting
Viewport
+1
Spawn Point Light ShortcutQuickly spawn a point light at the current mouse world location by holding L and then left-clicking.
Lighting
Viewport
+1