Hey everyone, I waited a few days to update to Sierra, but finally did it today on my 2015 Retina MacBook Pro. I've made a habit over the past few years of switching between apps using mission control on the trackpad. Today when Sierra installed and booted, I opened up Chrome and Mail to go about my normal business. When I used the trackpad gesture for mission control, I couldn't help but notice that it is slower than in El Cap. Is that just how it is now in the new OS? I guess it's not a big deal, but it was noticeable, to say the least.