How to change priority of Passware Kit process in case it overloads CPU?
Run Passware Kit, then launch Task Manager (Ctrl+Shift+ESC) and locate the “PasswareKitForensic.exe” process on the “Details” tab. For Windows 8/10, press Ctrl+Alt+Delete and select “Task Manager”. Click the “More details” link on the bottom of the window to see more information and locate “Passware Password Recovery Kit” from the list of applications. Right-click on the application and choose “Go to details”.
Right-click on the “PasswareKitForensic.exe” process, choose "Set priority" and then choose the low priority level: "Below normal" or "Low".
You might need to repeat these steps every time you launch the Passware Kit.