Duration of an animated slide

Hello,

I want to create a fully automated slideshow (no clicks) in PowerPoint 2010. I have set the different animation parameters (duration, entrance effect, exit effect...) for the titles and photos in each of my slides (animation tab). I have also chosen my transitions between each slide (transition tab). So far, so good.

My concern is the duration of each slide. I would like the slide change to occur immediately after the last animation of the slide without any delay. Here lies the problem:

In the transition tab, I indicated "advance to the next slide after x seconds," where x corresponds to the total time of the internal effects and animations (automatic) on my slide (which I check in the animation pane of the slide).

However, when I start the slideshow, there is always a time interval of 3-4 seconds between the last animation of the slide and the transition to the next slide, whereas I want it to be instantaneous. The time x I indicated is not taken into account (whether I set it to 0s or 100000s, the slide will always move to the next one, 3-4 seconds after the last animation of the slide).

I would like to point out that in the "Set up Show" option, "using timing, if present" is checked.

I have not found any answers to my question on this site or on the internet so far. I hope my question is relatively clear; it's not easy to explain without being able to show ^^.

Thank you for your responses that could help me.

Configuration: Windows Vista / Chrome 31.0.1650.57