I have a late 2013 Macbook Pro Retina 15 inch with integrated graphics (base model), which has display glitches that occur sporadically. This seems to happen more often when an external display is connected.
In the video, you can see the display glitches appear. Sometimes the glitches disappear when I move my cursor over it. This wasn't the case now, moving the cursor over to the external monitor fixed the issue.
My question: What could cause this and is there any known fix for it?