Yes, this is a well-known issue and a problem with scripts (which cannot be fixed) that are made for PVD MOD versions of the programs. Here it takes longer because the curl program downloads each web page individually in its entirety (for example, first the search results, then the basic pages of a particular movie, then the pages with actors and so on). The more pages there are, the longer it takes to download all the information. For the AllMovie websites, it might be possible to make a special script for the Actors or Review pages, in which case the information transfer would be a little faster.