This can happen as we get updates for the games, some mods and custom content become outdated. This most likely means that it is outdated mod or cc. If the game runs well without the mods folder. Like mods/cc that are outdated or no longer in game. This helps clear up some game glitches and will help to make sure there isn't any issues with mods or cc. This means move your mods folder to the desktop delete the localthumbcache.package from the Sims 4 folder. If you've tried that, you may need to troubleshoot your mods. In game options, turn off laptop mode, if on.
