I have a new late 2016 15" MacBook Pro, 2.9GHz i7, 16GB Ram, Radeon 460 graphics. I am randomly experiencing artifacts within application windows, often after swiping with four fingers on the trackpad to switch Spaces. Artifacts have shown up in Mail, Preview, Messages, Safari, Finder, etc. Attached are a couple of images showing the problem. Calling Apple last night, I was told this was a software problem and I should reinstall the operating system. Would anyone here potentially agree? They did not even so much as hint as it could be hardware, which is what I fear. The reason I ask is because I have experienced a similar situation before, with the 2012 MacBook Pro Retina actually, where it was the graphics card. I am asking because I have a Genius Bar appointment next week and want to know if I should push the hardware line of thought harder. Thanks!