Gameplay Settings Reset to Default on Every Launch

Changing Grind Assist to 10 is pointless because it keeps reverting to 100.
Trick settings also switch themselves on and off at random, creating an endless loop of corrections.
This has already happened four times, every single time I launch the game.
Worse, the resets happen inconsistently, so I have to inspect every setting on every launch just to play properly.
This is absurd busywork.