Video playback is pausing at the End of Slide

Hi,

I am creating a course using Articulate 9 where i am using MP4 video to display in each slide. Slides are auto advanced to move to next slide automatically without using user input. 

However, when video completes, video is pausing exactly at the slide change points. That's why slides are not playing seamlessly.

Please suggest to remove this lag or to reduce this lag time. 

Thanks