Hello I

@Rsteph75  The data for which notifications you've seen is stored in notify.glob, in Documents > Electronic Arts > The Sims 4.  If this file is corrupt, that could explain why you keep seeing the same notifications.  So try deleting it.  You'll of course receive the same notifications one more time, but hopefully only that.

It's also possible that the file is actually getting replaced rather than being corrupt.  This is especially likely if OneDrive is syncing your files.  You can try pausing syncing to see whether it makes a difference:

https://support.microsoft.com/en-us/office/how-to-cancel-or-stop-sync-in-onedrive-4885c27e-3d89-4d69-be75-2646c71367d3

The regular crashes could also be related to OneDrive in theory, but the BlueScreens are not.  Your dxdiag also doesn't list the BSODs, just some generic Sims 4 errors and a few crashes of your RGB software.  Please disable the RGB software while you're troubleshooting, just to be thorough.  For the BlueScreens, please look for any associated files here:

C:\Windows\Minidump

If you find a file with the same timestamp as a recent Sims 4 crash, right-click it and select Copy, then right-click your desktop and select Paste.  From there, you can upload the file to the free third-party filehosting site of your choice (Google Drive, Dropbox, etc.) and link it here.

If you don't find any relevant crash dumps, that's fine, just let me know.  In that case, my first suggestion would be the same as above—to pause OneDrive syncing—and if that doesn't help, to play while your computer is offline.  You can sign into the EA App and put it in offine mode, then disconnect from the internet before pressing Play.