I was looking at all the options in Windows RT 8.1 control panel and i found an interesting option to share with you. It may have always been there, but i didn't know it. In Action Center, there is a Reliability Monitor, which i found interesting to look at which apps were crashing.
Yes, you may become obsess looking at that like somebody already told you. Check that applications that are continually crashing and uninstall them or don't use them until an update is released that will make your device more stable.