topic Re: Slow 5Gigabit Internet? in Broadband

Slow 5Gigabit Internet?

IonPlinge — Sat, 10 Jan 2026 20:54:33 GMT

Hi everyone, I recently got the 5gbps fibre broadband installed in my home, however I wasn't personally home and my parents were but they are old and don't know much about internet or care for it, but for me, a 20 year old gamer, it was a childhood dream come true.

I have my pc wired up to the router via Cat7 Ethernet. It's less than 30 metres long. It's probably less than 10 to be honest.

So why is it that my Cat7 cable which is supposed to withstand 10gbps of speed only cap the router to send my pc (which is of very high end equipment and definitely capable of handling more than 5gbps of internet speed, let alone it has a built in Wifi 6E Card with antennas), 2.5gbps in my internet settings. Upon running an ookla speedtest, and many other speed test websites, it only really shows me 2.0-2.2gbps which obviously isn't even the guaranteed 2.5 AT LEAST. I tried disconnecting every device in my home and left my pc to be the only one connected. Still same problem. I am debating buying a Cat8 Ethernet cable to see if it'll make a difference. Only issue being, I'm upstairs, router is downstairs, I drilled holes in the wall to wire the ethernet through my house to reach my pc. So if I wanted a Cat8, I'd need to redrill and that's effort.

Any suggestions? Or is this a bust?

Re: Slow 5Gigabit Internet?

mormegil — Sat, 10 Jan 2026 21:05:24 GMT

Have you disabled the pc's WiFi and ensure the correct setting are selected on the lan card for the higher speeds?

what speed does the router return in the my sky app for your connection to the hub?

Re: Slow 5Gigabit Internet?

IonPlinge — Sat, 10 Jan 2026 21:09:42 GMT

Yes, I disabled wifi, I even took out the wifi card, which was over the top lol. I have a feeling, POSSIBLY, I don't actually have a 5Gbps NIC (Network Interface Card). But I haven't checked to be honest.

Re: Slow 5Gigabit Internet?

mormegil — Sat, 10 Jan 2026 21:11:26 GMT

You need to check the device and the setting to see if that is the issue and also check the speed to the hub to see if it is an issue with the city fibre install

Re: Slow 5Gigabit Internet?

IonPlinge — Sat, 10 Jan 2026 21:13:24 GMT

Yeah, I believe I have a 2.5Gbps NIC, I need to purchase a 5/10Gbps NIC. But don't know which one reputable. Got any suggestions?

Re: Slow 5Gigabit Internet?

mormegil — Sat, 10 Jan 2026 21:25:42 GMT

best lan card for gaming - Search

Re: Slow 5Gigabit Internet?

mormegil — Sat, 10 Jan 2026 21:29:33 GMT

what speeds are you getting through wifi?

the main selling point for the gigafast+ is to allow multiple devices to connect at high speeds at the same time as most hardware is not capible of connecting at 5Gbps

Re: Slow 5Gigabit Internet?

IonPlinge — Sat, 10 Jan 2026 21:30:10 GMT

Okay, I'm going to go for this card, do you think it'll be okay? I mean it states it has 5gbps ethernet cap. NIC Card

Re: Slow 5Gigabit Internet?

mormegil — Sat, 10 Jan 2026 21:32:48 GMT

Have you checked the hub is connected at the max speed yet? Do you have the relevant internal connections spare on your pc?

Re: Slow 5Gigabit Internet?

IonPlinge — Sat, 10 Jan 2026 21:47:34 GMT

Yes I have spare PCIe 4x Ports for the NIC.

On phone, it averages 200 or less mbps, which I don't know if it's normal or not, but it's like usable, with very low latency. On PC. I believe the results are tragic because the router is very far away from it, and my PC is under the table which just has lots of obstructions.

I am getting 50 mbps and 108 ping latency on my PC with Wi-fi only.

Also just checked my motherboards specifications, and I definitely only have a 2.5G Lan port, so I will definitely buy that 5G card and let you know. I should get it tomorrow.

Re: Slow 5Gigabit Internet?

IonPlinge — Sat, 10 Jan 2026 21:48:36 GMT

My ethernet cable is connected to the spare 10Gbps Lan port on the back of the router. It is already taking the maximum speed. Just my PC (the recepient, doesn't have the hardware to handle it, but it will tomorrow hopefully!)

Re: Slow 5Gigabit Internet?

IonPlinge — Sat, 10 Jan 2026 21:49:57 GMT

Scratch that, the NIC card will come on monday.

Re: Slow 5Gigabit Internet?

JimM1 — Sat, 10 Jan 2026 21:55:29 GMT

@IonPlinge With a 2.5Gb/s Ethernet and a wifi 6e turned on and combined throughput your Win 11 PC should have handled it fine, speed test's may not like it to much but the Resource monitor should have given you a better idea, 10Gb/s Ethernet is what will be required, and think the new Gigafast+ hub has that on it's Lan interface, if not it surely will be 5Gb/s!

Your Network settings properties will show you all you need regarding sync's on it, if you do have two high speed devices local on the network even better for testing, i easily stick 2.2Gb/s internal on a 5 year old wifi5 laptop with a 1Gb/s Ethernet combined!

Re: Slow 5Gigabit Internet?

mormegil — Sat, 10 Jan 2026 21:53:21 GMT

Enjoy I only have the 1gbps via openreach but manage 600mbps via WiFi at the other end of my house

could get more but get moaned at for moving the hub to a better position

Re: Slow 5Gigabit Internet?

IonPlinge — Sat, 10 Jan 2026 21:55:43 GMT

@JimM1 you're correct, it has a 10Gbps Lan port on the back right above the WAN where the fibre connects to the router. That's where my Cat7 Ethernet is out of into my PC. Problem being I need a 5Gbps NIC (Network Interface Card) to support it. It's currently only 2.5Gbps. I ordered one, as stated above, and it'll come monday. After installation, I shall come back to this thread and let you guys know what's happening.

Re: Slow 5Gigabit Internet?

IonPlinge — Sat, 10 Jan 2026 21:59:06 GMT

I'm a little suspicious of the speeds I'm getting on my phone and PC via Wi-fi though. Surely, Sky released this 5Gbps fibre broadband, being able to give most devices at least more than 500mbps. I don't even have that many devices connected, and as far as I know, broadband splits the total speed across however many devices there are.

Say I got 10, with 5Gbps speed. Every device should get AT LEAST 500 Mbps. But it doesn't. So I'm a bit suspicious of this.

Re: Slow 5Gigabit Internet?

JimM1 — Sat, 10 Jan 2026 22:14:06 GMT

@IonPlinge Cat 6a is all you need for 10Gb/s Ethernet lan, wired all my son's up for him, and his gaming PC PS5 Pro and through a VM hub although he is 2Gb/s symetrical the system is running full tilt no issues! Bigest issue is the Internet server's for speed testing, and you will need something like the speedtest.net windows app on your PC, at least that does shove some good data down the pipe when testing! Good luck with it all, and will link below shortly when i go get the link for you!👍

Benchmarking Broadband ISP Speed Testers On a 10Gbps Line - ISPreview UK

As you raised wireless wifi speed's you really need to go read this, but it is hard reading!

www.wiisfi.com would download and store, they used to do a pdf years ok but stopped that 4 yrs back i think!

Re: Slow 5Gigabit Internet?

JimM1 — Sat, 10 Jan 2026 22:25:10 GMT

@IonPlinge You are really going to hate me for saying this but there is nothing but good intent, FF500 is the sweet spot, FF900 optomistic and 5GB/s is a real waste off money, but do try and tax it as hard as you can, multiple speed test's kicked off at the same time and see how well you can stretch it, and DO keep in mind your wifi7 Hub is NO where near the best on the market and keep off the pods if you are testing!

Re: Slow 5Gigabit Internet?

IonPlinge — Sat, 10 Jan 2026 22:27:20 GMT

@JimM1 I don't hate you for the truth haha, I know 5Gbps is a waste of money, but I just want to be able to download games at supersonic speeds and have 0 latency, or as low as possible. My Steam download speed has halved since swapping from Vodafone 900Mbps. And I am a little distraught because, even with 2.5Gbps on my PC already, I don't reach anywhere near the speeds, I should.

Re: Slow 5Gigabit Internet?

JimM1 — Sat, 10 Jan 2026 22:34:44 GMT

@IonPlinge Fully understand, know exactly where you are, and pushing the envelope but as you say it's all shared, good day's and bad day's, peak's and slowdown's, as soon as the data leaves your ONT you have ZERO control over what/where/server and response, pretty sure a high speed server goes, 5Gb/s to you, then that will be right!