therwol wrote:
This is a long shot, but go into the settings and see that that a1 and a2 are set to "Release". When set to "Focus", the camera will not shoot a picture unless it confirms that the autofocus has focused properly first, and this can cause a delay. If your camera fires instantly in the release mode, then perhaps you need to play around with your autofocus modes.
In addition to being set to focus priority, it appears "back button focus" has also been selected. From the OP's description, everything may be working properly ... except the photographer.