@zelneciaaaa Alright, if you've clean uninstalled and reinstalled the Windows 10 driver, and the game still lags, please run a couple of basic checks on your Windows system files:
- Hit Windows key-X
- Choose either “PowerShell (Administrator)” or “Command prompt (Administrator),” whichever option is offered
- Inside the window that appears, copy and paste “DISM.exe /Online /Cleanup-image /Restorehealth” without quotes into the window, and enter
- The system will start validating soon. If it throws an error, please list it here
- After it reaches 100%, hit Windows key-X again
- Again, choose “PowerShell (Administrator)” or “Command prompt (Administrator)”
- Inside the window, copy and paste “sfc /scannow” without quotes into the window, and enter
- Post the message you receive here
Restart your computer, hit Windows key-i, select Update & Security, and click the button to check for updates. If any install, restart again afterwards.
If your save still lags, please test (again) a new save in a clean user folder. Move the entire Sims 4 folder out of Documents\Electronic Arts and onto your desktop, and a new folder will be created the next time you open the game. (Your save and other content will be intact in the folder you've moved but temporarily not read by the game.) Don't move anything to the new folder yet; just see whether a new save lags.
If you still have issues, please try a new save again, except this time while your computer is offline. You can sign into Origin and put it in offline mode, then disable wifi and/or disconnect the ethernet cable before pressing Play.