Why does Microsoft Edge consume so much RAM with advertising?

It is common to notice Microsoft Edge slowing down your machine by gobbling up gigabytes of RAM when you have multiple tabs open, especially if they load heavy dynamic banners and invisible background trackers.

Taming memory consumption in Edge

Excessive RAM usage is primarily caused by the execution of ad scripts. AdBlock Network prevents them from reaching your system memory. The extension performs read-only asynchronous requests to multiple independent endpoints to update the firewall, blocking the download of heavy ads at the Address layer before they can consume memory.