Under "Number of messages before the treeview goes dynamic:", I changed the setting to 50. The option doesn't seem to have any effect. The treeview will only go to "dynamic" when there are over 400 messages. Let's agree that 50 may be exaggerated, but I would at least like to test how it works with a lower setting.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)