make pc performance fast with using GNS3

 Right click router and press Console, it opens the console of the router and works as live router.
 This makes your system slow, as it is processor taking part of software and if we drag few routers on work board it makes really slow. So we use one option called Idle PC which decreases the processor cycle when not in use. Using only one router you can see below, it peaked the processor to above 80%.
 Right click on router again and select Idle PC option, it takes some time and prompter you following window.

  Dropdown the menu and select the value with * in beginning.
  Press apply and then click ok. Following windows comes up for confirmation, click ok to apply.
 You can see now it is 32 %, if it is not dropping then click idle pc again and chose other value.