there is none, all you can do is turn the settings all the way down and do cl_forcepreload 1, and change a few network settings. other than that its pretty locked down

there isn't a set fps config for csgo but there is video options like shadow quality shaders and other stuff that can boost ur fps.
here are mine this helped my fps a lot
http://i.imgur.com/5EcbtQ9.png

tbh i get like 80 at full res so i play really scaled down and that's probably the best advice for cs

pretty much what cme said. Almost all the commands require cheats in csgo

i use This it give me like 10 fps more(maybe its just a placebo)

nothing should be just placebo. record a demo and do a timedemo before and after

Note that this overwrites all your binds, probably want to go through it and remove all the binding stuff anybody plans to use it

You should keep Global Shadow Quality on medium, gives you advantages on some maps (f.x inferno short) as you can see the shadow of your opponent before they come around the corner.