Photoshop CC & Illustrator CC (Jan 2016) latest update very slow on Mac Pro (2013) w/ El Capitan. The update before this was actually (finally) really fast and performant. Never saw the pinwheel and things were fast like they should be on a top of the line computer. The latest update tho has made things ALOT worse. Pinwheel constantly on simple operations like opening the app, other things are a slow again.