I have a Surface Pro 4 that I bought about 6 months ago. Recently I have noticed that the screen starts to flicker/shakes when it's left idle for a few seconds. It stops when I use the mouse or keyboard or touch the screen. It gets really annoying when I'm trying to read from a PDF or something because I need to keep touching the screen or moving the cursor around to prevent the flickering. If someone could help me figure out what the issue is, I'd appreciate it.