Packet loss on FTTP on Speedtest.net

alreet99 · 2025-01-24T11:01:46+0000

Had 900mbit full fibre installed yesterday and noticed on Speedtest.net it was saying packet loss of about 6%. Looked back at previous tests on my old FTTC and it was 0%. Is this normal on fttp? Getting full speed and doesn’t seem to be any issues.

Just did another speed test and said 15% packet loss.

ash888 · 2025-01-24T11:51:11+0000

should not be getting packet loss, check all your equipment again. who is your isp?

https://speed.cloudflare.com/ try this test

ChrisD. · 2025-01-24T11:52:13+0000

It's likely you need to cap your upload to 90%.

alreet99 · 2025-01-24T12:05:47+0000

ISP is Sky.

Did that test and it said 0% packet loss. But the download and upload only went up to 680/94 compared to 920/107 on speedtest.net

Armageus · 2025-01-24T12:29:16+0000

Are you testing via wifi?

alreet99 · 2025-01-24T13:37:11+0000

Yes. Will try wired.

ChrisD. · 2025-01-24T18:08:53+0000

The ack's being sent during your download are saturating the connection hence the increase in packet loss. Limit upload to 90% of the upload capacity (ie, 90 Mbps) and the issue should go away.