Force Feature launch not working

I have very low fps, and looked online to see any solutions, and some worked, like lowering the quality of the game, and doing grass.on false in the console, but I cant seem to get -force-feature-level-9-3 to work. I am aware that it causes glitches in the skybox, but I will do anything to raise my fps.

the force feature don’t work anymore, like even if you have it on you don’t get the fps increase. Since the last update the game is broken for several players fps wise, just wait for them to optimize the game.