I was given a shiny new MBP 2016 with Touchbar at work. It was immediately shelved, the main reason being: performance when resizing windows is so frustrating that I just could not get over it. In 2012 I bought an MBP, the latest one before Retina regeneration. I'm surprised to say that after all these years it is working perfectly fine and much more smoothly UI-wise than the MBP 2016 I got. I'm now trying to force myself to use the new MBP. This time I decided to share my pain and ask around if I am the only one seeing these issues. These are the MBPs I have: Apple MacBook Pro "Core i7" 2.6 15" Mid-2012 Apple MacBook Pro "Core i7" 2.6 15" Touch/Late 2016 On each MBP I've recorded 3 short videos around 10 seconds each, with same scenario. All 6 videos are here: https://www.youtube.com/playlist?list=PLgcwLBAmV7X2WzHVAzu9SRbKhZM7uL2CY. To showcase the problem in this post, here are two of those vids: Resizing iTunes window on MBP 2012: Resizing iTunes window on MBP 2016: It's easy to see how ridiculously smooth the 2012 here in comparison with the 2016. Yes, I understand it's more pixels to draw, as 2016 one is retina. I also understand some programs redraw their contents faster than other. After googling around it does not seem like everyone universally agrees there's an issue, with a few exceptions: MB late 2016 Choppy Animation by resizing window Does window resizing lag for you too? Resizing windows choppy from discussions.apple.com This troubles me. Either the issue is intermittent and only affects me & some other very few MBPs / macOS installations (I doubt it, though), or everyone else just learned to live with these window resizing lags. I've also stumbled upon this topic, Is WindowServer smoother (now on Metal)?, but it contains no direct evidence that switching to newest macOS with Metal will fix resizing problems. So my questions are: am I the only one seeing this? While I was using my work horse 2012 MBP for 5 years, I didn't keep track of issues people might have been having with Retina MBPs. Were the lags bad like that all this time, making them a new "normal"? how can this windows resizing lags can be fixed? I'm still hopeful this could be fixed on existing macOS via some hidden configuration tuning.