I tried the following steps listed [here][1]:

 1. Delete /Library/Preferences/com.apple.windowserver.plist
 2. Delete ~/Library/Preferences/ByHost/com.apple.windowserver*.plist
 3. Shutdown OSX
 4. Startup, immediately press and hold the P and R keys while holding
    down the option (⌥) and command (⌘) keys before the gray boot screen
    appears, which [resets the NVRAM](https://support.apple.com/en-us/HT204063)
 5. You may have to reset your display preferences (resolution) once you
    login


  [1]: https://david.gyttja.com/2013/01/21/fix-lagging-display-performance-on-retina-macbook-pro/