Super hyped to play new version, but commands not working.

I’m sorry if this is the wrong forum for this question, I’m new to Facepunch. I used to play a ton of Rust, but when the whole Live/Experimental split started, I was a bit turned off by it, so I waited for the Experimental version to go live. Now that it has I am trying to play again, but I cannot use any of the old console commands such as grass.on false to reduce my lag like I used to. I have a laptop, so it’s not exactly geared for gaming, but with the old version I could just use a few commands and do perfectly, now all I get is “Invalid Command” from the console. What has changed? What commands do I use so I can get back into the game?

F1 - “Kill” will suicide your character.

F2 brings up a panel at the bottom of your screen where you can adjust settings for performance. Several people have informed me that turning off all but the first two will greatly enhance performance, at the cost of graphics quality. Play with the settings to find out what works for you.