Tips for Dealing with Simulation Lag?

charmingcowplant  Please test with no mods or custom content, as in, remove the Mods folder and do NOT add any of its contents back.  You don't need to save your progress.

If your main saves are still affected, please test a new save, for comparison's sake, still with no mods or cc.

If that doesn't help either, 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.