Strange lighting render(some props are too shiny)

I don’t know what makes them rendering like wierd for some maps.
Pipes some weapons

But the EP2 maps are normals with render.
Please leave me an advice if you know how to fix it.

Is there anyone can tell me?

Try restarting gmod. It’s just cubemap errors that are probably due to a lack of virtual memory.

No it’s due to HDR.

Turn off HDR in options and it’ll be fixed.

That’s not the way to fix this problem.
If that’s the case, then the mapper doesn’t know much about building LDR and HDR cubemaps.