LahLahX You chose the "never cc or mods" tag, but is that in fact true, that there is absolutely nothing in your Mods folder other than Resource.cfg? I just want to make sure since the simplest explanation for this kind of behavior is a bad mod.
If that's not the issue, please test a new save, for comparison's sake. Use fresh sims and a default EA-made lot, nothing from the Gallery or your own library.
If the new save is affected, please provide a dxdiag. Click Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop. From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.
If the new save is fine, load your old save and move the sims to a different lot, again a default EA build rather than anything from the Gallery. You don't have to save your progress; this is just for testing.