How to give priority to startup apps in Windows 8.1 pro

Looking for information on startup apps in Windows 8.1 pro? Here you go for the answer.

In Windows 7 I didn't faced such problem of startup app. Windows 8.1 pro gives automatic priority (medium, high and not measured) to startup apps which makes only high and medium priority of app lunched at every boot up of PC. Not measured priority of app doesn't launch at startup of Windows 8.1 pro.
It is irritating, need to launch such not measured apps manually and I'm also unable to give the priority to such apps. What can I do to launch such apps automatically at every startup of Windows?