The script looks like it’ll only change the dvars if you set them to nothing (e.g. set pers_boarding ""), otherwise they should persist across matches until you restart the game. If you want them to persist across game restarts, you could write them into %localappdata%\Plutonium\storage\t6\players\plutonium_zm.cfg and use seta just like the other dvars in that file, e.g. seta pers_boarding "0"