Run a few more tests and I confirm. Why is mtl_bump or even mtl_specbump so HEAVY if I apply it to just 3 concave meshes... while i can just load tons of normal mapped mdls and run with a great framerate? except those don't cast pre-rendered shadows when i compile the level which is why i need to use the concave meshes.

Please help? this topic has been sitting here for a while.