Slow Scraping Users with FollowLiker

Hello,

Since one year I use FL for Instagram. Before each sessions ( follow, like and unfollow) I launch a single task : Scrape users from users who liked a specific pic.

But I think I have problem because in 1 hour, for a pic with 900 likes, FL only scraped 118 users.

These are my settings :

Scrape User Limit : 200
These 2 options are checked :
Ignore users with no profile pictures
Ignore users with blacklist words in profil

That's all. Thanks for the help.