topic Re: Full fibre 300 Getting les than 100 in Full Fibre

Full fibre 300 Getting les than 100

Ian1964 — Sat, 21 Mar 2026 09:33:33 GMT

Hello

Just changed from Vodafone 150 to Plusnet 300 and I'm unable to get over 99Mbps my computer is connected via CAT 6 cable the only thing that has changed on the setup is the router and cables, I have spoken to Plusnet and they have asked me to wait a week as it's a new setup, WIFI does work at 300Mbps its just the LAN ports.

https://freeimage.host/i/qkd8Vte
https://freeimage.host/i/qkd8MN9
https://freeimage.host/i/qkd80S2

Re: Full fibre 300 Getting les than 100

MisterW — Sat, 21 Mar 2026 09:48:03 GMT

@Ian1964

I have spoken to Plusnet and they have asked me to wait a week as it's a new setup,

That's rubbish I'm afraid, Full fibre doesnt have a 'training' period, it goes at the provisioned rate immediately!

and I'm unable to get over 99Mbps my computer is connected via CAT 6 cable

WIFI does work at 300Mbps its just the LAN ports.

That points to a cable or a device problem. The cable between the ONT and router must be ok otherwise wireless speed would be affected.

Is the problem only with one wired device ?

check on the Hub 2 devices display and on the device itself that the device shows connected at 1000Mb and not 100Mb

edit: just seen your links, the last one shows that the device connected to LAN port 1 is only connected at 100Mb. That's your problem.

Check that the cable is ok. what's the make / model of the device ?

Re: Full fibre 300 Getting les than 100

PhilipHeyes — Sat, 21 Mar 2026 09:50:24 GMT

@Ian1964

Note the 3rd attached image, the very bottom entry that you highlighted

shows your LAN Port is connected at 100Mbps, that would limit speed test to about 94 Mbps.

Re: Full fibre 300 Getting les than 100

Ian1964 — Tue, 24 Mar 2026 16:13:58 GMT

I have a new router turning up tomorrow hopefully this will fix the issue.

Re: Full fibre 300 Getting les than 100

MisterW — Tue, 24 Mar 2026 16:24:23 GMT

@Ian1964 please let us know, but I'd be surprised if its the router at fault!

Was it the same when connected to the other LAN ports ?

Re: Full fibre 300 Getting les than 100

Ian1964 — Tue, 24 Mar 2026 19:38:17 GMT

Yes same speed over all 3 LAN ports, that speed has increased after I did a factory reset on the router so top speed now is

103Mbps, 309Mbps over WIFI.

Re: Full fibre 300 Getting les than 100

Ian1964 — Wed, 25 Mar 2026 12:24:56 GMT

New router installed and technical log now showing LAN connection up speed 1000Mbps this is up from 100Mbps on the old device but no increase on LAN speed, WIFI still 300Mbps.

Just for info on how my computer is connected to the internet I'm using TP Link AV1000 Gigabit Powerline Model TL-PA7010 and TL-WPA7510

https://i.postimg.cc/YqsygKwm/2026-03-25-11-39-31.jpg

https://i.postimg.cc/6pS3D3xy/2026-03-25-11-17-30.jpg

Re: Full fibre 300 Getting les than 100

Dan_the_Van — Wed, 25 Mar 2026 12:41:36 GMT

@Ian1964

Just for info on how my computer is connected to the internet I'm using TP Link AV1000 Gigabit Powerline Model TL-PA7010 and TL-WPA7510

I was disappointed with that model of TP-Link powerline adapters, although they may connected to the router at 1000 Mbps the link speed was for me never for above 60 Mbps, I stopped using them.

I currently use TP-Link WPA4220 with TL-PA4010, I see speed tests of 95 Mbps in both directions with these.

Re: Full fibre 300 Getting les than 100

Ian1964 — Wed, 25 Mar 2026 12:44:12 GMT

While these adapters are a few years old now I've not had a problem with them and the Vodafone service that's half the speed of Plusnet was much faster.

Re: Full fibre 300 Getting les than 100

Dan_the_Van — Wed, 25 Mar 2026 13:09:57 GMT

plusnet only guarantees the speed to the ONT, you would need to demonstrate that the speed with a device connected directly to the Hub is below your product speed.

As you have already stated WiFi devices speedtest is around 300 Mbps this suggests your product provision is fine.

Any third party equipment is out of scope.

You are using at cat5e cable or above at the PC end of the powerline adapter?

Have checked to see what the speed is between the powerline adapters?

Re: Full fibre 300 Getting les than 100

MisterW — Wed, 25 Mar 2026 13:15:27 GMT

@Ian1964

TP Link AV1000 Gigabit Powerline Model TL-PA7010

My experience with those is that they'll max out at around 120Mb even when on the same electrical circuit. Put them on different circuits with RCD's and they'll drop down as low as 25Mb.

Re: Full fibre 300 Getting les than 100

Ian1964 — Wed, 25 Mar 2026 13:31:46 GMT

Just ordered a USB to ethernet adapter as my laptop does not have an ethernet port then I can test the router direct.

Re: Full fibre 300 Getting les than 100

MisterW — Wed, 25 Mar 2026 13:42:02 GMT

I hope that's a USB3 gigabit adapter and the laptop has a USB3 port ?

Re: Full fibre 300 Getting les than 100

Ian1964 — Wed, 25 Mar 2026 15:08:22 GMT

USB 3.0 to Ethernet Adapter with USB-C to RJ45 Gigabit LAN 1000 Mbps Wired Network, Ethernet to Type-C 10/100/1000Mbps Network Adapter for Windows XP, MAC OS, Linux, VISTA 7 8 10 11

Laptop has

1X USB 3.2 Gen 1 Type-C
1X USB 2.0 Type-A
2X USB 3.2 Gen 1 Type-A

Re: Full fibre 300 Getting les than 100

MisterW — Wed, 25 Mar 2026 15:44:36 GMT

@Ian1964 thanks.

That looks good. That USB ethernet adapter shouldnt be a limiting factor. I was concerned that it might have only been USB2 in which case it may have limited to around the 250-300Mb.

Re: Full fibre 300 Getting les than 100

Ian1964 — Wed, 25 Mar 2026 19:05:00 GMT

Will be interesting to see if this works, odd still the fact I'm getting a slower speed (Via LAN) and the only thing that has changed is the service provider and router.

Re: Full fibre 300 Getting les than 100

Chris_S — Fri, 27 Mar 2026 08:47:15 GMT

Hi @Ian1964

I'm just checking in to see how you're getting on and if you've seen any improvements?

Chris S

Re: Full fibre 300 Getting les than 100

Ian1964 — Fri, 27 Mar 2026 09:09:37 GMT

Hi Chris

The USB Ethernet adapter has produced speeds of just over 300Mbps so full speed on my laptop so the router is working as it should.

I had forgotten that I had a call back from Plusnet booked for yesterday, this did help as the lady made some changes to the router settings and increased my speed to 120Mbps.

In my lounge I have two double sockets next to each other one thing I hadn't tried was moving the Powerline adapter to another socket on doing this my speed has increased and as of now is 140Mbps.

I'm going to take the face plates off the sockets and check the connections. I've also ordered a new Powerline kit that's coming today (TP-Link PG2400PK) I'm hoping this will help with the speed, if not maybe a WIFI dongle for the PC my be my only option to get full speed.

Thanks everyone with your help so far.

Re: Full fibre 300 Getting les than 100

Chris_S — Fri, 27 Mar 2026 09:39:57 GMT

I really appreciate you keeping us updated @Ian1964.

Hopefully, your new TP-LInk powerline kit turns up today, and if it does, let me know if you have any further success with improving your speed.

Chris S

Re: Full fibre 300 Getting les than 100

Dan_the_Van — Fri, 27 Mar 2026 09:48:11 GMT

@Ian1964

Be interested how you get on with the TP-Link PG2400PK.

For Windows to check the current speed of your connection you can use this powershell command

Get-NetAdapter | where Status -eq "Up" | Format-List -Property Name, Status, InterfaceDescription, *LinkSpeed

For me I get

Name : WiFi Status : Up InterfaceDescription : Intel(R) Wireless-AC 9461 LinkSpeed : 433.3 Mbps ReceiveLinkSpeed : 433300000 TransmitLinkSpeed : 433300000

I have a Full Fibre 900/100 connection, so you can see I have a speed limitation due to the WiFi adapter. Something I have to live with !

LinkSpeed is higher than the achieved speed due to overheads.