<https://forum.eset.com/topic/1194-progress-bars/#comment-6472>
<http://schema.org/text>
"It depends on the number of files, subfolders within a folder as well as on possible archives that are scanned. There's nothing that could be done about it. One thing is that it would take a lot of time to calculate the number of files in each of the folders on a disk, another thing is that it's not possible to estimate the time necessary to decompress archives. "
<https://forum.eset.com/topic/1194-progress-bars/>