Rust on Mac

Hi!
So I bought Rust today and wanted to play it on my Macbook Pro 13". It only has the onboard graphics card HD 4000. When I’m ingame the game is completely unplayable because of very low fps. Is there anything I can do to make it run? I already set the settings on fastest.

Thanks for every answer

grass.on false in the console helps
so does fullscreen
so does low resolution

We’re looking into both mac and linux issues, Thanks for playing sorry it’s not performing the best