Are you in franchise mode when this happens? I was noticing the same thing. But I think I found a solution.
The issue seems to be with the saved presets. The fix is to set your settings, sliders, etc in the franchise, then save the preset.
THEN, go and make a change, and change it back. It will now say "UNSAVED PRESET"
DO NOT SAVE THE PRESET. leave it unsaved.
Now save your franchise file.
If you enter a game with the settings as "unsaved preset" then in game, if you make a change to the a setting, all other settings will stay the same. If you enter a game with a saved preset, when you adjust settings in game, they all reset.