Re: settings returning to default

@theevilbudgie  This is the typical reason settings would revert:

https://answers.ea.com/t5/PC/CURRENT-ISSUE-Anti-Virus-blocking-User-Folder-Screenshots/m-p/9572695

If that's not the problem, an app trying to "optimize" your Sims 4 settings could be the culprit.  For example, GeForce Experience has had that option for a number of years.  Other supposedly game-boosting apps may do the same.  So please check the settings of any such apps you happen to have.