Any Launch commands that people could tell me please?

Right basically I quit for like two months after alpha got put on steam this is when it wasn’t officially out and I used this -force-feature-level-9-2- it worked great gave me and extra 70 fps and the game was playable, but recently I have came back to rust and my fps has turned to shit again so I was wondering if anyone has any up to date launch codes that work:)