It would probably help to add / change the http timestamp of the pages, so the browser won't reload on each navigation.
Maybe it's done for the variant that's faster and not for the other?
edit: these are relavant:
header('Pragma: no-cache');
header('Expires: 0');
Maybe it's done for the variant that's faster and not for the other?
edit: these are relavant:
header('Pragma: no-cache');
header('Expires: 0');