I am optimizing my map, and the biggest problem for me right now is the portalflow part of the compile process. I have outdoor areas, and am going to try optimizing it more. I have two big questions: 1. up high, where the player rarely goes (probably only from sticky jumps). I don't remember, but I think valve uses areaportals up high in their maps. Should I use areaportals or hint, or nothing at all? (it would go across the entire 'sky') 2. large displacement floors. Nodraw, areaportal, or hint? I am thinking nodraw underneath would work the best.