I know that changing zones when playing on my slow computer is guaranteed to make the queue pop while I stare at the zone name with a black screen, hearing the ticks. Some zones do take longer than 45 seconds to load- the game has the CAPACITY to make the duty finder window clickable during the load transition (because if you alt f4 during this time, it gives you the official "do you want to close game" popup. They really should allow clicking commence during zone transitions.