does it matter what is on the screen?
Does the desktop have the lines as well as , say , a web browser?
Yes. It appears on the desktop background as well as in the web browser. I notice that it seems to start off in Chrome and the Desktop, then migrates into other applications like skype and spotify, then eventually it starts to happen in the Windows 8 Start Menu and Windows 8 Metro Apps. Though, it is very very minor in Windows 8 menus and metro apps. Even once it fully progresses to the the point where I have about ten to twenty lines across the desktop/chrome, the metro app will only have one or two may every couple of minutes. 7