I'm working on a map, it's going pretty well. However, in 2 areas, I get some odd flickering lighting. I'll just post a video of what I mean: [ame="http://www.youtube.com/watch?v=CSUx0yBINxs"]YouTube - Lighting glitches in TF2[/ame] Visit the video's page on youtube to see the annotations, though they don't go too far beyond what I've put here. Ignore the lack of cubemaps. In the first part, This only seems to affect the wood textures in the room. The metal beams you see are func_detail, like the bridge, but they don't flicker. In the second example, normal world brushes seem to flicker, and lights seem to fade off when I can't directly see the light source. My map is leak-free, no errors when compiling. Anyone have an idea what could be causing this and how to fix it?