I'm not surprised. ImageOptim, TopazVideo and Handbrake x265 CPU are prime methods to get the CPU super hot and the fans working overtime. I would have been happy if the M3'd've made a difference but not something to expect, when you push the CPU in a small encasement, this must happen. In the Studiowith the Ultra, it also happens, but due to the offing massive cooling unit you don't notice it as much. The smaller fans in the MBP kick up a lot of noise, though.