Re: Brand New Sims 4 lagging with no CC/Mods
@Caitlinxzz Try clearing Origin's cache, then uninstalling it "the hard way." This shouldn't affect your installed games.
https://help.ea.com/en-us/help/faq/clear-cache-to-fix-problems-with-your-games/
https://help.ea.com/en-us/help/origin/origin/manually-uninstalling-origin/
Restart your computer, then download the full Origin installer, and run it as an admin: right-click on the installer and select "Run as administrator." This is a direct download link:
http://download.dm.origin.com/origin/live/OriginSetup.exe
Once you've installed Origin again, run a repair of Sims 4, just for good measure. Open your Origin game library, right-click on the Sims 4 icon, and select Repair.