Dalibor

Code Unloader

Per-page JavaScript & CSS asset management. Surgically dequeue scripts and styles on any page using exact, wildcard, or regex URL rules.

shawfactor

This plugin simply removes the scripts and styles that buddypress adds to your site, but only for non logged in users. Logged in users who need the buddyoress functionality are not effected
Thus speeding up the experience of normal vistors
This plugin would be more appropriate on a site that has a private buddypress area whilst also having general public facing content.

LH Dequeue Buddypress

Dequeue the scripts and styles that buddypress adds for non logged in users.

Code Unloader vs LH Dequeue Buddypress