How to speed up data processing in treeview?

Question

.NET

I have a large amount of data written in a treeview in a separate thread. Everything would be fine, but when, during the loading process, I start to open the nodes and view the data, the UI performance starts to sag sharply. It's not surprising, but that's just such an option is not very satisfied.
Virtualization doesn't help. For display I use XmlDataProvider in which the data is written.
Maybe someone faced a similar problem and can tell what can be done here?

Answer 1

abandon treeview, there are very few tasks for which this particular component is really needed, it may be possible to replace it with listview