QUIC protocol shows promise in enhancing web application performance, but our study reveals a significant data rate reduction on fast internet compared to TCP. The performance gap widens with higher bandwidth and affects various applications like video streaming and web browsing. This issue stems from high receiver-side processing overhead due to excessive data packets and user-space ACKs. Our findings recommend solutions to address these performance challenges. Surprisingly, this issue affects major web browsers and different hosts and networks. This research sheds light on the critical areas for improvement in QUIC protocol implementation.
https://arxiv.org/abs/2310.09423