Skandha,
Thank you! I installed the plugin and created a child theme. It deactivated both Featured and Course carousels, but it was simple to just click them back. It took me a couple of seconds to realise, that the data cycle setting is within a div output and not PHP code. It seems, that you have a slight typo in “1sec=1000, 2sec=200”, i.e. it should be 1 s = 1000, 2 s = 2000 and so on.
Another point is, that either WP or browsers seem to cache values, so finding a pleasing speed required some patience and pressing of the refresh button. Works now, thank you.