In shared groups. Adding users, adding admins, deleting groups, basically anything associated with groups times very very slowly. I currently have one group that will not delete. Has this been resolved in a newer nightly?
I would add to this. Deleting of user (which is in some group, and this group is shared to all) is taking longer than removing this contact from group first and then deleting. I was seeing such behaviour with some older version. It was faster to unshare and then delete group, than trying to just delete it.