I found this on a steam forum or somewhere.
but Put it in D:\rust\rust_Data\Resources
and youll notice a 5+ FPS boost which will make the game more playable.
in conjunction with the command grass.on true/false (can be put in config.cfg
it will boost nicely.
i have to run this game on LOW settings and turn grass off ingame as well....
and i get about 25-35 fps.
please seed. i cant seed forever.