For some inexplicable reason within the last week or so I am being haunted by jittery animations when I swipe between desktops/full-screen Windows running OS X 10.11.3 on a four month old 2015 MacBook Air. I at first thing it might have been that either the cpu or memory were maxed out but activity monitor shows nothing of the sort and my usage hasn't changed since getting this Air. Had run on it 10.11.1 all the way to .3 which was the most recent update. I mainly surf the web, word processing and media consumption on this computer, same thing I did on my previous MacBook Pro from 2012 (the last non-Retina version of the 13") both with 4GB of memory and I never had any issue of the sort with that machine and thats running operating system from Mountain Lion to El Capitan. This Air originally came with Yosemite preinstalled, I wipe it and clean installed El Capitan and chose to create a new user account and manually migrate over my data to avoid bringing any potential 'problems' from my previous setup. Anyone have any idea what is going on? Something wrong with my machine or it's a known bug for some people with the operating system or this particular Mac?