My introduction slide has animation but no audio. I want it to play for 9 seconds (or less). I set it to go to next slide after 9 seconds in Powerpoint. I also set slides with no audio or animations to play for 9 seconds in Presentation Options in Articulate. However, no matter what those settings are, it always plays for 20 seconds when it's published. What else must I do to change the slide timing?