The slowest part is likely to be the network component, and there you can look at the experimental deployment by Comcast, that others have linked to in comments

The slowest part is likely to be the network component, and there you can look at the experimental deployment by Comcast, that others have linked to in comments. So far I have not heard of moves by other network providers. Apple already has experimental L4S support for QUIC and TCP: https://developer.apple.com/documentation/network/testing_and_debugging_l4s_in_your_app https://developer.apple.com/documentation/network/testing_an...