In-Game Settings Keep Changing By Itself

Every time I log in to play the game, I have to check my Grind Assist to see if it goes back to the default 100. I play between 5-15% and want to keep it on that setting.

Also, when I do log in, the game changes my graphic settings. It keeps putting itself on Low everything and 30 fps. When I do change to the preferred peripherals, the game then changes its resolution rate to the lowest setting. Once I change it back, the graphics will change back to low and 30 fps.

I attempted to re-install the game but it keeps encountering this bug on PC.