Low speed in Firefox

[ajavibp]

You are right.
Thank you very much to everyone for your help.

[axt]

ajavibp, I assumed that you have generally bad rates with Firefox, not only for (synthetic) speed tests and not only for speedtest.net servers (where it can be difficult to find fast test servers for your own fast access).

Well, one good user agent switcher is this one.

[ajavibp]

I recently noticed a drop in speed, which is why I started using the tests (it was at the request of my company). Not obtaining the contracted speed, I opened an issue, but they did not find any problems on the network. So I started looking and doing checks.
Thank you very much for your recommendation.

[eriefisher]

I just tried this speed test to see it there were any differences and got similar results that I posted earlier. Just to eliminate speedtest.net issue.

[ajavibp]

The problem may appear at high speeds. I have tried several test servers, and always with similar results.

[piper]

All of you's are missing the key point

Delete debians version and use the real firefox and put it in /opt

firefox 79.0a1

[ajavibp]

Neither.  Despite being a nightly the bug persists.Download 268 Mbps, Upload 262 Mbps.

[piper]

I don't see it, sorry

Thats not saying I disagree that you have a problem, I am just not seeing it on 4 machines

[ajavibp]

Obviously it may be my problem, I don't know. The possibility of a bug seems feasible because it was not me who reported it, so it happens to more people, and the bug talks about an implementation problem. In any case, I will be on the lookout for the bug and continue to test from time to time. Little more can I do, I don't have enough knowledge to take the initiative.
Thank you for your comments

[piper]

No problem, hope you get it solved whether it's on your end or firefox itself