Hi, Simon here - I'm the FlexMonkey in flexmonkey.blogspot. I actually did some side by side comparisons with El Capitan beta a while ago and the performance o

Hi, Simon here - I'm the FlexMonkey in flexmonkey.blogspot. I actually did some side by side comparisons with El Capitan beta a while ago and the performance of my MBP wasn't too dissimilar to my iPad Air 2: http://flexmonkey.blogspot.co.uk/2015/06/cross-platform-metal.html http://flexmonkey.blogspot.co.uk/2015/06/cross-platform-meta... There are some issues with Metal under the latest 10.11 build, when they're fixed, I'll take another look. Cheers, Simon