NC calendar slow with one specific calendar

[Bernie_O]

@airflow

Then it wanted to have an export of the problematic calendar. If I try this, NC throws a fatal error

To circumvent the error you can export calendars with calcardbackup. There is a calcardbackup community container for Nextcloud AiO which you could use: all-in-one/community-containers/calcardbackup at main · nextcloud/all-in-one · GitHub