E-learning reacts slowly on action buttons

Dear all, I have some problems with many of my e-learning projects: Everything works fine in preview, but after publishing to html the e-learning seems to react only slowly on action buttons (especially “go to next slide” or “jump to slide”). I’ve  created my own navigation bar at the bottom and every button is displayed right at the beginning.  When I play the e-learning in explorer or chrome (both the same issue) I click the “next” button and only after some seconds I get to […]