We have landed some patches recently to improve the HTTP/3 upload performance. Could you try to use the latest nightly version and test again? If the upload speed is still slow, could you try to record a log by visiting `about:logging` and selecting `HTTP/3 upload speed` and `Logging to a file`? Thanks.
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We have landed some patches recently to improve the HTTP/3 upload performance. Could you try to use the latest nightly version and test again? If the upload speed is still slow, could you try to record a log by visiting `about:logging` and selecting the logging preset to `HTTP/3 upload speed` and `Logging to a file`? Thanks.