L4S pulls this off by giving internet packets an indicator that lets them know if they’ve run into congestion or queueing along any of the hops in their trip between a user and whatever they’re connecting to. If there is a delay, then the devices can start to adjust to stop making the congestion worse — and possibly eliminate it entirely.

Comcast has announced a new ultra-low latency connection that promises almost zero lag during gameplay and video calls.The Latest Tech News, Delivered to Your Inbox

Laggy internet might be a thing of the past, at least for Comcast customers. In a press release today, the company introduced what it calls a first in the nation -- ultra-low-latency internet designed for gaming, videoconferencing, and virtual reality. The technology has been in testing since 2023.