Game doesn't save / Infinite saving

@lilstarry  Please try playing in a new admin Windows account.  (This will eliminate the influence of any issues with your current Documents folder or anything inside it, as each Windows account has its own Documents directory.)  Make it a local account, as in don't sign into Microsoft or OneDrive, and don't sync with any other services you normally use.  You'll be able to sign into Origin and won't need to redownload anything, but your saves and other content won't be available.

Let me know whether this works, and we can go from there.  If it does work, one option is to transfer your content to the new account and continue from there, but I can see how you may not want to if your current account is set up exactly the way you like it.