OS X/macOS have always been slower than Windows and Linux on the same exact hardware in my experience. I've been comparing them since the early 2000s and here are my observations: Programs are slower to start, dragging and resizing windows is slower and programs that need to display a large amount of text/data are less response e.g. when selecting text, scrolling, waiting for navigation, etc.
These problems are exacerbated by the poorly implemented / missing window management features of the Mac OS, the general lack of a good keyboard acceleration system and Apples penchant for hiding useful features beneath label-less icons or hidden/stateful gestures.
These problems are exacerbated by the poorly implemented / missing window management features of the Mac OS, the general lack of a good keyboard acceleration system and Apples penchant for hiding useful features beneath label-less icons or hidden/stateful gestures.