I tried selveral things, adding less brushes,
 scaled textures.
 I read Aguires tooltips for the thing, and it says it are too many lightmaps.
 There is no leak, or warnings so I can't change a thing.
 I had this thing earlier, and then it helped with the new Tyrlight.
 
 Now it seems a thing of # many vertexes?
 fil02078 goes well, fil02080 don't.
 
http://members.home.nl/gimli/fil02078.dz