Hello! For a while now, whenever I turned on the screensaver and left my desk for half an hour, I'd come back to see my CPU temperature rise to 80ºC and my fans spinning at a substantial speed. When I wake it up again and unlock the computer, it quickly cools down and is nice and quiet again. I did look at the activity monitor immediately after waking up the computer, and there were no problematic processes going on. This problem occurs even if I have almost no background applications open - only Safari, Mail, Messages... I'm using a late 2013 15" rMBP (2.0Ghz i7, 16GB...) with an external monitor and running the latest El Capitan 10.11.6. I even cleaned the fans about a month ago... Is anybody experiencing similar problems?