okay, so it's definitely because of the fps.
One thing to try, I think in css there is a command that limits the fps. Try limiting it to say, something like 100 and see if the fps goes up. Since it's constantly at 9, even with different settings it could be locked. And if you can't find the command, (though someone here must know it) you could try reinstalling the game. And after deleting the game make sure to delete the config file.