When I clicked the link you provided, the elements on the page took quite a while to load. It could be the case that the elements (image assets, for example) are unable to properly load in the allotted crawler time, which in your case is five seconds.
Perhaps try extending your crawler time limit, or adding a few minutes to the “Delay After Page Load” option. Hopefully this will work!
Thanks for the respond and please excuse my late answer.
This error I got with a lot of pages, none of them seems to me slow when I click on it. But yeah maybe you’re right, that it is a problem with some of the object on the pages… hard to answer.
Crawl time limit is unlimited, Page load limit is at 1 min, what does not sound short to me?