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by eastdakota 2253 days ago
Because Quiche, our HTTP/3 library, only supports CUBIC for congestion control, not more modern algorithms like BBR. Even without modern congestion control, HTTP/3 performs close to as fast as HTTP/2. We expect it’s performance will improve significantly when we implement BBR and other enhancements already in more mature protocols.
1 comments

It looks like CUBIC was only just added today - https://github.com/cloudflare/quiche/commit/f8bfb919ec17ef32...