Serious lag/loading issues

Hi everyone,

I've been having a lot of issues with Sims 4 the last few days. I do not have any cc or mods. On Friday, my game wouldn't load and was stuck on the second loading screen after the main menu. On Saturday evening, I was finally able to get the game to load, but with serious lag (5-10 second delay). I uninstalled both the Sims and the EA app and reinstalled both, but I am still having lots of trouble with it. Everything takes so long to load that the game isn't even fun to play anymore. I've tried following several methods online and cleared cache, restarted my PC, and uninstall/reinstalled several times. Any tips on what I can do, or is this a platform-wide problem? TIA