A few tips come to mind.
1. Sims 4 factory reset, new game without mods.
Resetting the game to factory settings without reinstalling
https://answers.ea.com/t5/Technical-Issues-PC/READ-FIRST-Troubleshooting-your-Game/td-p/3621199#Rese...
This will rule out problems with your current saved games and mods. If mods are the issue. Go through the mods folder and replace the outdated mods and custom content.
Finding Problem CC
http://modthesims.info/wiki.php?title=Game_Help:Finding_Problem_Custom_Content
2. Turn off Origin in game:
In Origin - Application Settings - Origin In-Game. Turn this off. As sometimes it causes issues with the game.
3. Try updating your graphics drivers
Finding devices and updating drivers on your PC
https://help.ea.com/en-us/help/pc/finding-devices-and-updating-drivers/
After updating the graphics drivers, restart the computer.
4. Start the game in Windowed mode, via Origin:
In Origin > Games Library - Right-click on Sims 4 and select Game Properties.
In the Command Line Arguments, add the following text: -w and click Okay.
5. Try running Origin As Administrator - Right-click on the Origin icon on the desktop and select Run as Administrator.
If the above doesn't help, please share your computer's information with us.
https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/
You can attach the txt file to your post directly. With this information we can see if there's any hardware or driver issues.
