Ext.Tree.Panel Remove Nodes performance

[asti]

I have 350 items added to a tree node ( node.appendChild(array) ). This was so slow that i had to use Ext.defer to get the GUI responsible.

But now i have to delete all nodes, before appending new ones.

It takes over 10 seconds to remove the nodes with node.removeAll(). How can i improve that?

Thanks for your suggestions.

[Farish]

What if you remove the root node or the first parent node after the root? wouldn't it delete the child nodes also? I havent tried this. Just a guess.

[asti]

Deleting and Recreating the parent node is much butter ( 30 msecs to remove the 350 nodes )
Thanks