Now that the map is in beta and more people are complaining about fps it's time for some optimization concerns that I'm seeing.
The map makes proper use of areaportals so that's all fine but it seems a lot of the visleafs around the map are not being cut properly which may result in an excessive amount of the map being rendered at once. Obviously this was an issue for people the most on A but I believe it is something that occurs throughout all of the map.
You can see in your portalfile or with mat_leafvis that some of the visleafs are extending from the floor all the way to the skybox. This means that by default players in this visleaf will be treated as if they could be on the ground or in the sky and renders things accordingly. Inside of this visleaf you end up with most of the first point rendering at once. While the areaportals help it is not perfect.
To fix this you have to make sure to cut the visleafs horizontally with hint brushes at height levels of meaningful cover and make sure that any props / displacements meant to provide cover are also given nodraw world brushes to tell vis that they actually block visibility. The more accurately you make your world brushes conform to the level, the more info vis has to optimize it (to a certain extent).
I assume this is something you planned to do more work on later into beta but it is important to keep in mind as much as possible now since frames will only get worse the more you detail.
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