Configuration file resetting to default itself

[TehPuertoRicanSpartan]

Why is my config.cfg resetting to default itself? Can anyone explain why?
Sometimes that happened to me, how do I make it not reset itself?

 

[Mario A. Roach]

I'd recommend you running the game as administrator, it could be the game not having permissions to save the .cfg file.
Who knows, try that out first and I'll see if I get any more input so I could help you furthermore.