Could you post your Computer's DxDiag?
To gather a DxDiag on your computer, please follow the steps here: https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/
You can attach the txt file to your post directly.
Uninstalling won't make you loose your content. You can backup everything to be on the safe side: https://help.ea.com/en-us/help/the-sims/the-sims-4/backing-up-and-resetting-the-sims-4/
That said, I wouldn't go through that just now. Let's do some troubleshooting first.
I don't work or have any association with EA. I give advice to the best of my knowledge and cannot be held responsible for any damage done to your computer/game.
Please only contact me via PM when asked to do so.