Thanks for the good words.
I had captions on my old site but found most people never read them.
The image jump while loading happens on laptops and desktop machines until all the images are fully cached. Usually clears after one full cycle. Will have to explore if there is code I can include to hold the slideshow sequence till everything is loaded.
Was concerned if Adobe's Muse would write "junk" code to mess up the appearance on certain browsers. Muse isn't perfect, but a heck of a lot easier to use then Dreamweaver.
Glad to hear it works on iOS. I don't have an iPhone so could not test. Those using iPads have not had problems.