Hey Rich, I just tried Run 322 - I use Safari and have the latest version of IOS. In fact, I tried viewing it twice and it froze at the same place both times - page 57/58 which is a two page spread featuring only photos. Maybe that’s a clue?
I tried Run 325 and it too froze at the same place - pages 9/10 with 10 being all photos.
Hope this helps.
Bob