I have noticed lately that when I change from 1 node to another, i.e. in the tree pane I click on a different from the one in focus, it takes 5-10 secs. The size of the file is 4.2 Mb, which should not be a problem, or is it? If not that, then what is it?
In a smaller file I have, 1 Mb, this does not occur.