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.

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.

Comcast has announced new technology for ultra-low lag Internet on its Xfinity service. According to the company's release, users of select products and software from its partners will experience less delay in situations with bi-directional traffic.

Comcast has announced its first ultra-low lag Xfinity Internet experience, lowering the latency for gaming, videoconferencing, virtual reality, and many more.