Crashing save?

KaKi5656​  Let's start from scratch, with a clean user folder, and build back up from there.  Move the entire Sims 4 folder out of Documents > Electronic Arts and onto your desktop.  When you launch the game, a clean folder will spawn with no content.  (Your saves and other content will be intact in the folder you've moved but temporarily unread by the game.)  Don't add anything to the new folder yet; just start a new save and see how it runs.

If you get another crash, or a freeze, or anything isn't working correctly, let me know what you see, and stop here.  In this case, please also provide a dxdiag.  Click Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop.  From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.

If the new save is fine, you can copy an old save to the new folder and test it, but without your mods or custom content for now.  If that save is fine too, you can start adding back your mods and cc.

If your old save is NOT fine in the new folder, test your sims and the lot separately in new saves and see what you get.  You can test the lot with fresh sims by using money cheats.  If you can't download your sims or lot from the Gallery, the Library files would be saved in Tray in the old Sims 4 folder.