@Seleos13, I appreciate your apreciation! ❤️ I'm just sorry I can't help you better, other than to explain some things. ☹️
I'm glad the repair worked for your last problem! That is one less problem that you have to worry about! 🙌 And at least you can see why so many people recommend this even if it doesn't always work!
I do know that the longer you have a save game, the more likely strange things will happen. But strange things can happen in newer games too.
You can always delete you cache files. You can delete :
Cache folder
Cachestr folder
onlinethumbnailcache folder
localthumbcache.package file
There is something else that might help some of your problems that arent' bug-related:
https://answers.ea.com/t5/Technical-Issues-PC/READ-FIRST-Troubleshooting-your-Game/m-p/3621199
There are quite a few things mentioned that might be of help to you. Some of them you will have already tried, but there might be some new things that will help! 🤞 You might have the best luck with the section called "Resetting the game to factory settings without reinstalling" 🙂 But please look at the others, as you might find other helpful tips!