The crawling time itself depends on the website page generation time mainly, since it crawls the site similar to search engine bots.
For instance, if it it takes 1 second to retrieve every page, then 1000 pages will be crawled in about 16 minutes.
In your case I see that it has crawled 3821 pages in 1h27min:
Pages scanned: 3821 (54,169.1 KB)
Pages left: 24 (+ 0 queued for the next depth level)
Time passed: 1:27:33