What are the best methods to fix high CPU usage caused by TiWorker.exe?

Users should perform these commands to stop high CPU usage from Windows Modules Installer Worker. Wait until all updates conclude then run the Windows Update Troubleshooter (Settings > Update & Security) and check for updates manually followed by restarting the Windows Update service (services.msc). When the problem continues you should clean the update cache located at C:\Windows\SoftwareDistribution then execute sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth commands followed by changing Windows Update to run manually through services.msc. Driver updates together with system restore should be used as last way to resolve the issue.