Why is ​Firefox Quantum so fast? Mozilla reveals a tweak that turbo-charged its browser
Found on ZDNet on Saturday, 23 December 2017
The technique was developed by Mozilla engineer Honza Bambas, who calls it "tailing". It works by delaying scripts from tracking domains when a page is actively loading and rendering.
Page load performance is improved by saving on network bandwidth and computing resources while loading a page, in a way that prioritizes site requests over tracking requests.
Geez, why not just drop all connections to trackers if they are already identified? Not that it matters much, because those who already have adblockers and other privacy plugins won't even notice that "speed-tweak".