i am looking for ways to improve fps on my map

[Billo]

i am looking to improve fps on my map one guy told me and i really appreciate it that my map has low fps (18-20 ) he told me about optimization
i have placed nodraw pretty much everywhere not visible except from ground for obvious reasons
i used func_detail to some buildings on detail and yea
some props are not solid
and the ground its just one layer i mean if you see it from underneath its like there is nothing and you can see the players and evem shoot them ( i hope you understand what i mean)
what else can i do to improve the fps even more on my newest version i am working?
please feel free to tell me down below

 

[Dadema]

use hint and areaportal brushes:

View: https://www.youtube.com/watch?v=Ne59X-e-R9Y

 

[sooshey]

This page will tell you everything you need to know about optimization. I know it's long, but optimization isn't easy, and you usually have to design your map specifically to be well-optimized, instead of making whatever you want and trying to optimize it later.