I do love my diagrams!
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And 30 minutes later it back to poor:
Howard@PI-5-4GB:~ $ speedtest
Retrieving speedtest.net configurationā¦
Testing from Yayzi Broadband (nnn.nn.nn.nnn)ā¦
Retrieving speedtest.net server listā¦
Selecting best server based on pingā¦
Hosted by HighSpeed Office Limited (London) [323.94 km]: 12.838 ms
Testing download speedā¦
Download: 206.86 Mbit/s
Testing upload speedā¦
Upload: 104.51 Mbit/s
There is no other traffic while doing my test. The RPi is the only device connected to the router. I donāt see this variability with my provider on OpenReach.
What do you get on here?
You can use iperf if you like 
think you can do iperf3 -c proof.ovh.net -p 5210 -b 1G -l 32K -R
Or try this iperf3 -c proof.ovh.net -p 5210 -u -b 2.5G -t 60 -l 1400 -f M
I slightly modified the parameters, but for better or worse I got:
howard@PI-5-4GB:~ $ iperf3 -c proof.ovh.net -6 -p 5210 -u -b 2.5G -t 15 -l 1400 -f M --version4
warning: UDP block size 1400 exceeds TCP MSS 1268, may result in fragmentation / drops
Connecting to host proof.ovh.net, port 5210
[ 5] local 192.168.0.4 port 46916 connected to 141.95.207.211 port 5210
[ ID] Interval Transfer Bitrate Total Datagrams
[ 5] 0.00-1.00 sec 276 MBytes 276 MBytes/sec 206802
[ 5] 1.00-2.00 sec 276 MBytes 276 MBytes/sec 206501
[ 5] 2.00-3.00 sec 275 MBytes 275 MBytes/sec 205921
[ 5] 3.00-4.00 sec 276 MBytes 276 MBytes/sec 206508
[ 5] 4.00-5.00 sec 276 MBytes 276 MBytes/sec 206812
[ 5] 5.00-6.00 sec 276 MBytes 276 MBytes/sec 206484
[ 5] 6.00-7.00 sec 275 MBytes 275 MBytes/sec 206002
[ 5] 7.00-8.00 sec 275 MBytes 275 MBytes/sec 206230
[ 5] 8.00-9.00 sec 276 MBytes 276 MBytes/sec 206510
[ 5] 9.00-10.00 sec 276 MBytes 276 MBytes/sec 206623
[ 5] 10.00-11.00 sec 276 MBytes 276 MBytes/sec 206701
[ 5] 11.00-12.00 sec 275 MBytes 275 MBytes/sec 206172
[ 5] 12.00-13.00 sec 276 MBytes 276 MBytes/sec 206723
[ 5] 13.00-14.00 sec 276 MBytes 276 MBytes/sec 206743
[ 5] 14.00-15.00 sec 276 MBytes 276 MBytes/sec 206740
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[ 5] 0.00-15.00 sec 4.04 GBytes 276 MBytes/sec 0.000 ms 0/3097472 (0%) sender
[ 5] 0.00-15.05 sec 1.73 GBytes 118 MBytes/sec 0.007 ms 1769656/3097331 (57%) receiver
iperf Done.
Iām not famliar with interpretting iperf3 results. Should I be seeing 57% on the receiver? Maybe the issue.
BTW, setting -l 1268 I still get (56%) receiver
Shouldnāt be getting drops no
Good suggestion. Iāll try and put my hands on a laptop or similar that has a 2.5G i/f but it may be some time. Right to question the USB C. Thanks.
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Weāre looking into this, if you could disconnect absolutely everything and if you have a PC (with a 2.5Gbps network card) directly into LAN4 on our router.
This just helps us rule out anything from your side, as we donāt use any traffic managment at all.
We have seen some screwy results via USB-C - Weāre all here to help so between us all weāll get it figured out
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Can you speedtest directly from the router? Like I am on a 1.2G service and my PCās get 940mb/s down/up, but the routers on 2.5WAN gets 1.2Gb/s down, 1g upā¦ LAN side is on 1g
or as @Yayzi_Team says, plumb directly into the matrix
If it helps heres a custom temp AWS iperf3
Will only be up for 1 hour.
3.8.5.206:5201
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Thanks Yayzi Staff.
Iām now in correpondance with Stefan from Support.
Iāll shut up for now on the forum. But thanks all for the useful suggestions - weāll get to the bottom of it.
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You are welcome!
Let me know if you need the AWS instance brought back online if you wanted to test against it
2 Likes
Much appreciated @WhyAydan
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I take that comment bck about saying yayzi are out of depth running a isp,that was a bit harsh,I was tired and frustrated trying to explain my issues with emails,even though I waited a few hours for a reply they were genuinely nice and trying to be helpfull and I wish the yayzi team all the best
4 Likes
They do try their hardest. Iām sure they appreciate the apology. Itās very warm in the UK so I get it
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This is worth a look, adds a splash of generative AI. Can use natural language and itāll create diagrams. Not perfect though as with all the AI.
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Hi yah, Can you help with configuration rt-ax86u router pls, I cannot find vlan option.
Thank you
I have one of these routers in the cupboard. I will dig it out tomorrow and have a look.
Hey, If I were you I would start from installing the newest Merlin firmware for it, then adjusting the settings.