Ever since the latest patch I've noticed the duty finder seems worse than ever. I primarily queue as healer or tank (I know, I have it much easier). A queue that might say less than 5 minutes sometimes take 15 minutes or more.
The job slot icons keep alternating from full to missing someone back and forth, making the queue take much longer. Sometimes the queue stops at full party for minutes before commencing (I noticed this in Wanderer's Palace when farming zodiac drop).
Also the old issue of getting pushed back to the bottom of queue after a failed commence. The people who clicked commence should stay in the same queue and the duty finder should just find replacements to the persons who did not click commence. As it is now you can be queueing as solo for minutes after a failed commence.
The duty finder is one of the primary ways to play this game and it should work flawlessly. While the withdraw abuse was fixed with the recent patch, it still needs some serious adjustments.