Lowers PageSpeed Insights speed score

This plugin is really great: it brought me dozens of new fans every day since I’ve been using it on [Link redacted] and [Link redacted] . However, since a few weeks I’ve noticed that when Facebook Page Promoter Lightbox is active, it kills PageSpeed Insights speed score (40/100 when plugin is active, instead of 65/100 when not active).

I think this problem is related to a recent update of Facebook’s API or something. It might be worth checking on that side.