Blocks and or any objects edge at about a 5 to ten block distance will have lines around their edges it's not game breaking but annoying to see because you can see the lines in clouds. Not just the edge of the clouds but each individual block piece of it. You will see about 10 square per cloud and the blocks it's at the edge of one. Iv'e never had this issue on my old laptop, but my gaming PC has this problem.