Realtime lighting is not working correctly

Development Rendering
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1

This is the 3d person demo level and when I select “force no precomputed lighting” and I change the position of the floor a bit, some walls will be black. I would have expected to see full realtime lighting when I turn “force no precomputed lighting” on.

2

Are you using Brush to make your walls and floor? If yes,you need to rebuild your geometry.

3

just rebuild the light and it should looks great

4

Add a Skylight.