In big files, the Outliner would have a noticeable lag when opening or collapsing items. That was because the entire tree was rebuilt, which isn't actually needed in most cases. So we avoid it where possible now.
In big files, the Outliner would have a noticeable lag when opening or collapsing items. That was because the entire tree was rebuilt, which isn't actually needed in most cases. So we avoid it where possible now.