The issue with runtimebroker.exe taking up so much memory and causing my Windows 10 machine to be come unstable just started happening about a week ago. If I leave the computer on with nothing even open for any length of time I get the following pop up window and the computer becomes unstable.
When I End Task on runtimebroker.exe the memory comes back and the system recovers.
I am not running Norton AV (nor should anyone for that matter). How do I tell what application is causing this to happen?