Decrease sync delay
The sync of changes has a huge delay. Shared calendar can take hours, sync in mobile app can take minutes. This should be both near real time.
please decrease the delay or add a sync now button
Yes please! Anything above 30 minutes is unreasonable. At a minimum there's no reason a "sync now" button can't exist.
Yes please! Add a "sync now" button *and* poll for updates more frequently. I don't know if it'd decrease the infrastructure load, but if so, where I really need rapid syncing is in only for the current day and the week ahead, to know if my immediate-future schedule has changed!
Or/And, add a refresh button.
Fully supporting this. At every 30 or 60 minutes would be nice.