Alt/Ctrl macro menus are instant from a gamepad, they take a second to appear from the keyboard.

They are instant as long as you use real gamepad configuration of course. If you associate a gamepad button with Alt or Ctrl on your keyboard of course the menu appear speed will be exactely the same.
And this one of the many reasons why we are asking them to update their controller handler, because doing it through software like xpadder (who associates keyboard keys to gamepad buttons) is not the same.