static lights become dim after buildling light

Development Rendering
1

Whenever I build lighting, static lights become dim.

before build

1.PNG

after build

2.PNG

I have added LightmassImportanceVolume, am I doing anything wrong?

2

Do your meshes have proper UVs for the lightmaps? And you shouldn’t use static, use stationary. Static is completely static, even the specular reflection is. Stationary has baked indirect lighting and shadows and dynamic direct lighting, it looks way better.

3

Is your light inside the light fixture? It’s probably blocking the light from being emitted. You could make the light 2 pieces, and have the bright part be unlit and not cast shadows.

4

Yes, I found the UV is not correct, thaink you guys.