As noted in a previous post, large documents could take a long time to load with version 7.2 (and 7.3) of the XMLmind XML Editor.
There is good news: the recently released version 7.4 of the XMLmind XML Editor has greatly improved the load time for large documents. While version 7.3 took 13:30 minutes to load a large document, version 7.4 takes only about 20 seconds.