I have a strange behavior with the plugin last version or not (I'm using 4.7.3 in production mode, and I tried 4.9.0 for debugging purposes) :
If I set the "Column Width" parameter to auto in settings (Table I A-1),
the first time I display my slideshow, the picture is not fullsize
(It shows with the max-width = 640px, which appears to be the default value, different from the one I specified in Table I B-1 at 920px) but there is is extra white space around the picture, corresponding to the dimensions I specified.
But if I reload the page, then everything is fine !
The picture occupies the correct rectangle.
I also checked with firebug, and the width is set to 640px for the first call in the style itself,
and it has the correct values when I reload the page...
What am I missing ?