Tried that, everything saves BUT that option.Don't forget that you gotta quit the game via the Quit button for your config to save.
Every time I boot up GZDoom, the "Freelook" option under "Gameplay" option resets itself.
It does that with all profiles I tried, and I know they save other options, because I change Display scales/aspect ratio and those are saved.
I was able to make them slightly bigger by changing the Display scale, but I'll try to check your config too.Try my config i posted few pages back.
Do you have a pic of your options letters like you have them now?