@swcheppes Are you still playing your existing saves? If so, please test a new save in another completely clean folder, with absolutely nothing added to it. Again, play while your computer is offline. While you're at it, disable your antivirus/firewall during the test. Since you won't be online, your computer shouldn't be at risk.
If you still get lag, please run a couple of checks on your Windows system files. Here's how:
- Hit Windows key-X
- Choose either “PowerShell (Administrator)” or “Command prompt (Administrator),” whichever option is offered
- Inside the window that appears, copy and paste “DISM.exe /Online /Cleanup-image /Restorehealth” without quotes into the window, and enter
- The system will start validating soon. If it throws an error, please list it here
- After it reaches 100%, hit Windows key-X again
- Again, choose “PowerShell (Administrator)” or “Command prompt (Administrator)”
- Inside the window, copy and paste “sfc /scannow” without quotes into the window, and enter
- Post the message you receive here
If sfc found corrupt files and was unable to repair some of them, stop here. Otherwise, test again, also a new save in a clean folder while playing offline with your antivirus/firewall disabled.