After upgrade from version 2.2.7 to 2.4.2 we are notice a significant increase time of selecting triggers from group by non-zabbix admin users.
This is particularly noticeable for the page Triggers -> 'group = all & "host = all".
For users wich has rights just for one group e.g. 'NameOfGroup', when he selects filter Triggers -> 'group = NameOfGroup & 'host = all' and when he selects filter Triggers -> 'group' = 'All & 'host' = 'All'
In the second case time is substantially higher.