Lightmaps: White spots on floor after baking with high resolution

Development Rendering
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1

Please help me! I have bug with white spots on floor! Watch the video!

VIDEO: ue4 lighting bug - YouTube

  1. I have only Point Lights with static mobility. No direction light.
  2. Floor material have Roughness 0.2 for little reflections.
  3. Floor mesh have Lightmap Resolution 512.
  4. Point Lights have Specular Scale 0.01
  5. Lightning Quality: Production

How can i fix it?

2

Hi!

To me it looks like a bad reflection… what happens if you set the material NON reflective?

3

If I turn off SphereReflectionCapture or set Roughness to 1, floor looks good…If i set Mobility - Stationary, floor looks good too.