Ligh Glitches Through BSP Brushes

Hey all, I’m using 5.3 and I just made a room made of different BSP brushes so it’s completely closed. The level I’m testing in only has one SkyLight.

However, when I start playing I see these weird glitches as if the light was passing through some of the brushes. I’m using 40uu for the width of walls and ceiling, in a way that they overlap in at least 20uu.
This was made with the default Basic level.

What can I do to avoid these glitches? Any best practices regarding BSPs that I’m overlooking?

Thanks!

There should be a button inside the actor that converts them to static meshes. BSPs can’t generate mesh distance fields and aren’t visible to raytracing, they’re effectively invisible to Lumen.

The best practice is to not use BSP brushes, but if you must then you will have to convert them to static meshes after editing.

I see, thanks for the clarification!
What should I use instead of BSP brushes? Should I use the modeling tool? Asking because I tried to use it, but it was quite cumbersome to use the modeling tool for doing stuff like doorways, whereas with BSP you just do a substractive brush and boom! Instant doorway.

Either the modeling tools plugin or import your meshes after modeling them in another app (Blender, Maya, 3DS Max, etc).

OK, I’ll try to use the modeling tools plugin. Thanks for the quick response!