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Lighting bleed in large scene

I am trying to build the large scene with 20 identical rooms.

(1) Room contains one stationary spotlight with intensity: 0.5, inner cone :90, outer cone: 90, and attenuation radius: 1800*.


(2) Level has stationary directional light with intensity: 3.0, indirect lightning intensity: 1.0, volumetric scattering intensity : 1.0.

(3) Stationary Skylight with indirect lightning intensity: 1.0, volumetric scattering intensity : 1.0.


(4) LightmassCharacterIndirectDetailVolume, LightmassImportanceVolume and PostProcessVolume. Here is the light mass settings https://imgur.com/j5u1Dcw

After the building the lighting i got these results.



There is the lighting bleed in the corner as well as at the intersection of the walls.

(5) Here are the lightmass density sceenshots. https://imgur.com/CEPSjiQ https://imgur.com/fkXvOPF

It's working with 4 Rooms. But Unable to work with 20 or more rooms.

I also tried to build the scene with UE 4.14 and UE 4.17. I got the similar results.

Product Version: UE 4.18 Preview
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asked Sep 28 '17 at 02:52 PM in Bug Reports

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