Just an update on now closed thread;
Bubble support got back to me and, in response to my sample pages and several videos illustrating issues, development engineers did review these issues and — based on my testing — it does seem that issues related to mobile performance for certain types of pages have been improved.
While I’ve no info on the specifics of the fixes, my own issue related to slow evaluation of large numbers of conditional states on mobile.
This behavior started only recently and now seems mostly resolved. If you use Codurly’s custom calendar technique, you will likely find that your custom calendars are more sprightly on mobile now.