Because it's QUIC _implementations of browser_ not being as fast as the non quick impl of browsers on connections most people would not just call fast but very fast (in context of browser usage) while still being definitely 100% fast enough for all browser use case done today (sure it theoretically might reduce video bit rate, that is, if it isn't already capped to a anyway smaller rate, which AFIK it basically always is).
So "Not Quick Enough" is plain out wrong, it is fast enough.
The definition of "Fast Internet" misleading.
And even "QUIC" is misleading as it normally refers to the protocol while the benchmarked protocol is HTTP/3 over QUIC and the issue seem to be mainly in the implementations.
So "Not Quick Enough" is plain out wrong, it is fast enough.
The definition of "Fast Internet" misleading.
And even "QUIC" is misleading as it normally refers to the protocol while the benchmarked protocol is HTTP/3 over QUIC and the issue seem to be mainly in the implementations.