A question to the #Tech bubble: I would like to use #Thunderbird with a bunch of shared calendars over Caldav. I had this issue two years ago and now here it comes again: Thunderbird becomes very slow as soon as all these calendars are added. They contain plenty of events each, many of them are reoccuring and I have tried both with and without offline support and also disabling autorefresh on some of those. I recall that back when I had the issue last, switching the view to show just one calendar at a time would help but to no avail now. Is this something I have to live with in 2023? ###Mozilla #OpenSource