r_lodcurveerror , cheat protected?

I’m trying to get quake 3 to look as good as I can get it, so I’m setting a lot of things in q3config.cfg

I’m finding that the one thing left I cared about most is r_lodcurveerror, which is for some reason cheat protected…and even though I can change it the instant I’m at the q3 menu, i can’t put it in my q3config, so I have to set it manually each and every time. Why? is there a workaround for this past not caring?