Windows XPS 15 9530 screen flickering issue

My laptop functions normally except for after ~20 minutes of being on, the entire screen, not just an application, will begin to flicker, flashing and distorting the contents on the screen. Ive seen other people who have this problem when the computer shows a still image and it stops when the image changes or moves. This is not the case for me. The screen continues flashing until I close the laptop for a minute or two and then it is good when I open it up again.