5G broadband struggling in a busy house? Here's what to do
From the calls we take every week When 5G can't keep up at busy times, a fixed line usually can.
If 5G home broadband keeps slowing or dropping in the evening in a busy house, the usual fix is a fixed line. 5G shares its capacity with everyone using the local mast, so speeds dip when the area is busiest. A fixed line runs to your home, and full fibre (FTTP) holds up best at busy times, with fast uploads on many plans. Part fibre (FTTC) is widely available and still a clear step up, but its speed depends on how far you are from the street cabinet. Check what your exact address can get, compare the deals, read each provider's recent reviews, and ask about installation before you order. Keep the 5G running until the new line is working.
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Key facts, verified 20 October 2026
- 82% of UK homes, 24.9 million, could get full fibre in January 2026, and 89% could get a gigabit-capable connection (Ofcom, Connected Nations Spring 2026, published 13 May 2026).
- In March 2023 the effect of busy-time congestion was lowest for full fibre lines of any type (Ofcom, home broadband performance, published 14 September 2023).
- Across all fixed lines, the average download between 8pm and 10pm was 95% of the average maximum in March 2023 (Ofcom, published 14 September 2023).
- 4G and 5G users saw their slowest average speeds between 6pm and 9pm, and 5G downloads were 13% to 30% slower in the busy part of the day than between 3am and 6am, depending on the network (Opensignal, 2023).
- Since 23 May 2018, a broadband speed advertised as an average must be available to at least 50% of customers between 8pm and 10pm (Advertising Standards Authority).
- Openreach part fibre (FTTC) lines offer up to 76Mbps download and up to 15Mbps upload, and speeds can drop the further a home is from its street cabinet (Openreach, checked 20 October 2026).
- Microsoft recommends 2.5Mbps up and 4Mbps down per person for group video meetings in Teams (Microsoft Learn, checked 20 October 2026).
- Netflix recommends 5Mbps for Full HD and 15Mbps for 4K, per stream (Netflix Help Centre, checked 20 October 2026).
- Since 12 September 2024, One Touch Switch means you only contact your new broadband provider, and you're owed compensation if you're left without service for more than one working day (Ofcom).
- Three asks for 30 days' notice to cancel its home broadband, may charge an early termination fee if you're still in contract, and asks for its 5G hub back (Three, checked 20 October 2026).
Who this is for: every week we talk to people whose broadband isn't keeping up with the household. This month it was a landlord whose student tenants kept losing their connection on 5G home broadband in the evenings, right when homework, online lectures and group calls happen. If that sounds like your house, whether it's students, a family with teenagers or a flat-share, this is exactly what we'd tell you on the phone, step by step.
Why does 5G home broadband slow down in the evening?
Direct answer: Because it shares the local mast with everyone nearby. When lots of people go online after work and school there's less capacity to go round, and mobile networks are usually slowest between 6pm and 9pm.
A 5G hub works like a big mobile phone. It talks to the nearest mast, and that mast is also serving every phone, tablet and 5G hub in range. At 3am there's capacity to spare. At 8pm, with the whole street streaming and scrolling, everyone gets a smaller slice.
How much slower 5G got in the busy part of the day (compared with 3am to 6am)
Where the hub sits matters too. Three suggests moving its hub to a better spot, such as a windowsill, with nothing covering it. That can help, but it can't add capacity to a busy mast. So when people tell us their 5G is fine in the day and frustrating in the evening, it usually isn't anything they're doing wrong. Our guide to slow broadband at night explains what a normal evening dip looks like.
Is it the connection or the Wi-Fi?
Direct answer: Test at about 8pm right next to the router. If it's slow there too, it's the connection. If it's fast there but slow upstairs, it's the Wi-Fi.
In a house of four or five people, both can be true at once. Thick walls, fire doors and bedrooms on different floors all weaken Wi-Fi, so it's worth knowing which problem you're fixing before you spend any money.
Two-minute test: is it the connection or the Wi-Fi? Slow even next to the router It's the connection The line into the house can't keep up at busy times. That's when a fixed line, ideally full fibre, makes the difference. Compare deals for your address. Fast next to it, slow upstairs It's the Wi-Fi The signal isn't reaching every room. Moving the router often helps, and RouterMap shows you the best spot for free. Bigger houses may need mesh Wi-Fi.
What's the difference between FTTC and full fibre?
Direct answer: Part fibre (FTTC) runs fibre to the street cabinet and uses the copper phone line for the last stretch. Full fibre (FTTP) runs fibre all the way into your home, so it's steadier at busy times and has more room to grow.
How each type of broadband reaches your home 5G home broadband Radio signal, shared with everyone nearby Quick to set up, but the mast's capacity is shared, so busy evenings can slow everyone down. Part fibre (FTTC), shown as Hybrid Fibre on our deal cards Fibre Copper phone line Fibre runs to the green cabinet in your street, then the old copper line does the last stretch. The further the copper run, the lower the speed. Full fibre (FTTP) Fibre all the way, carried by light No copper at all. It holds up best at busy times, and many plans offer fast uploads.
On our deal cards, part fibre shows as Hybrid Fibre and FTTP as Full Fibre. Full fibre is now within reach of most homes: Ofcom counted 82% of UK homes, 24.9 million, in January 2026, as our Connected Nations report explains. If it doesn't show for your address, part fibre is still a real step up from a struggling 5G connection, and our guide to why next door might have full fibre covers what to do next.
5G, part fibre and full fibre, side by side
5G home broadband Part fibre (FTTC) Full fibre (FTTP) How it reaches you Radio signal from a local mast to a hub indoors Fibre to the street cabinet, then the copper phone line to your home Fibre all the way into your home At busy times Shared with everyone on the mast, so speeds can dip in the evening Usually steady. Across all fixed lines, evening speeds averaged 95% of the top speed in 2023 Lowest congestion of any line type in Ofcom's 2023 data Upload Varies with signal and how busy the mast is Up to 15Mbps on Openreach's network, often less Varies by network and plan. Some match the download speed What sets your speed Signal strength, where the hub sits, how busy the mast is Distance from the street cabinet Mainly the plan you choose Installation Plug-in hub, no engineer Sometimes just a new router, if there's a working line Usually an engineer visit the first time Best for Quick set-up, or homes without a good fixed line A clear step up where full fibre isn't available Busy homes, video calls, big uploads and room to grow
Want the deeper version? Our full fibre vs FTTC vs cable vs 5G comparison covers every type of connection, including cable.
Is full fibre on your street?
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- ✓82% of UK homes can get full fibre (Ofcom, January 2026)
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How much speed does a busy house really need?
Direct answer: Less download than most people think, but more upload. By our arithmetic, five people at 8pm can need around 33Mbps down and up to 12.5Mbps up. The bigger differences between line types are upload and consistency.
Here's a typical busy evening in a five-person house: two people on group video calls for lectures or work, two streaming in Full HD and one watching in 4K. We've used Microsoft's recommended figures for Teams group meetings and Netflix's own speed guidance.
A busy 8pm in a five-person house: download needed vs what the line gives
That's the minimum for one busy moment. Updates, game downloads and Wi-Fi losses all eat into it, which is why our students guide suggests 100 to 150Mbps for four or five students for comfortable headroom. To work out your own house, try our speed calculator or RightSpeed, which covers upload as well as download.
Upload is where busy houses feel the squeeze
Upload is where shared houses feel the squeeze. Video calls send your picture out, and coursework, photos and backups all go up the line. Our upload vs download guide explains why it matters, and here's what it means for one everyday job:
Time to upload a 2GB coursework video
Do I need an engineer, and will it cost extra?
Direct answer: Part fibre can sometimes be switched on with just a new router if there's a working line. Full fibre usually needs an engineer the first time. If the property needs extra work, it can take longer or cost more, so ask before you order.
For full fibre, the engineer finds a route for the cable into the house, fits a small fibre box on an inside wall near a plug socket, and connects the router to it. Many visits are quick, but long cable runs or work outside can add time. Our installation times guide sets out typical waits, and our engineer visit checklist helps you get the house ready.
Some deals charge a set-up fee and some don't, and it's shown on the deal card. Our guide to set-up and exit fees explains both.
From order to online: switching a busy house off 5G
How do I choose a provider I can rely on?
Direct answer: Look beyond price. Read recent reviews, check Ofcom's complaints figures and customer service comparison, and add up the full contract cost. Good service is part of reliability.
When something goes wrong at 8pm with five people waiting, it's the provider's support that decides how long you're offline. A provider with a great network and slow support can still leave you with a house full of complaints. Our provider directory shows Trustpilot scores side by side, so you can shortlist quickly.
Six checks before you press Buy Now Recent reviews Look at the provider's Trustpilot page and read the last few weeks, not just the star rating. Installation and fault handling tell you the most. Complaints data Ofcom publishes complaints per provider every quarter and an annual customer service comparison. Our Complaints Floor report explains how to read them. Installation Earliest date, whether an engineer needs to visit, and whether anything could cost extra. Get the answer before you order. Upload speed It isn't on most deal cards. For a house full of video calls, it matters. Our upload vs download guide shows what to compare. Full contract cost Add up the whole contract, including set-up and any set price rises. Our total contract cost explainer walks you through it. Compensation Many providers pay automatically for delayed repairs, missed appointments or late installs. Our automatic compensation guide has the current rates.
If a provider does let you down, you have rights. Our complaints guide explains how to escalate, step by step.
How do I compare deals for my address?
Direct answer: Enter your postcode on BroadbandSwitch.uk, pick your exact address, choose Broadband Only, filter by technology, then open each deal and check the provider's reviews before you press Buy Now.
Compare deals for your address in six steps Go to BroadbandSwitch.uk and enter your postcode Start on the homepage. It's free and takes a couple of minutes. Pick your exact address from the list Availability can change from one house to the next, so the address matters more than the postcode. Choose Broadband Only, if you don't need a landline or TV That keeps the list to the deals you need and makes the prices easier to compare. Filter by technology Full Fibre for FTTP, Hybrid Fibre for FTTC. Look at both, then weigh reliability against price. Open the deals you like and check the provider's reviews Read the deal card in full, then look at recent Trustpilot reviews and Ofcom's complaints data. Press Buy Now, then ask about installation You'll go to the provider to order. Ask about installation dates and any costs, and mention it's a shared house.
Before you press Buy Now, read the deal card in full. Here's what each part tells you:
How to read a deal card before you press Buy Now Example: Full Fibre 150 Full Fibre technology 158 Mbps average speed* £XX per month Increasing to: £XX from 1st April £XX set up cost £XXX full contract cost
£XX from 1st April next year
How do I move off 5G without a gap?
Direct answer: Order the new line first, keep the 5G running until it's working, then end the 5G contract. Your new provider may be able to handle the switch for you through One Touch Switch.
Since September 2024, One Touch Switch has meant you only contact your new provider, and Ofcom says you're owed compensation if you're left without service for more than one working day. It covers home broadband that's plugged in at a fixed address, which can include 4G and 5G home broadband, and Three says One Touch Switch is the easiest way to move. Ask your new provider when you order whether they'll handle it. Our One Touch Switch guide explains how it works.
If you do end the 5G yourself, check the terms first. Three, for example, asks for 30 days' notice, may charge an early termination fee if you're still in contract, and asks for its 5G hub back. Give notice once the new line is booked, so the two overlap rather than leave a gap.
I'm a landlord: what else should I think about?
Direct answer: Check the contract allows broadband for tenants, plan Wi-Fi for every floor, and think about how the contract fits your tenancies.
Many home broadband contracts are written for one household's own use. Our guide to broadband for HMO landlords looks at what the main providers' terms say, so read it and ask the provider before you order. It also covers recharging broadband to tenants and why, in houses with solid walls and fire doors, a cabled access point on each floor usually beats Wi-Fi repeaters.
For tenants' side of the story, our renters guide and students guide explain what they can and can't change. And when the line is in, a few minutes with RouterMap helps make sure the signal reaches every bedroom.
What should I do now?
From slow evenings to a clear answer
Run the two-minute test at 8pm, next to the router and upstairs, so you know whether it's the connection or the Wi-Fi.
From a long list to a shortlist
Compare deals for your address, filter by Full Fibre and Hybrid Fibre, and shortlist two or three on reliability, reviews and full contract cost.
From shortlist to installed
Press Buy Now on your favourite, ask about installation, and keep the 5G running until the new line is working.
Ready to leave the 8pm slowdown behind?
Compare fixed-line deals for your exact address, then talk to the provider about installation.
- ✓Every deal shows the full contract cost
- ✓Trustpilot scores in our provider directory
- ✓We're here if you need a hand
In summary
- 5G home broadband shares the local mast, so evening slowdowns in busy areas are common, not a fault in your house.
- Run a quick test next to the router at 8pm to tell a slow connection from weak Wi-Fi.
- Full fibre holds up best at busy times and often has much faster uploads. Part fibre is a clear step up where full fibre isn't available.
- Full fibre usually needs an engineer the first time, so ask about dates and costs before you order.
- Choose the provider as carefully as the technology: recent reviews, complaints data and the full contract cost.
- Keep your 5G running until the new line works, then give notice and return the hub.
Alex's closing thought
I had a lovely chat this week with a landlord who'd done nothing wrong. He'd put 5G broadband into his student house because it was quick to set up, and for a while it was fine. Then the evening messages started: calls freezing, homework not uploading, the lot. We went through his address together on the phone, found plenty of part fibre options and a single full fibre one, and talked through what each would mean for the house. My view? If reliability is what you need and full fibre reaches your door, take it, but choose the provider as carefully as the technology. A brilliant line with poor service is still a headache. Whatever you pick, keep the old connection going until the new one works. And if you'd like a hand, ring us. That's what we're here for.
Keep going: the guides behind this article
Understand your options
Choose well
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Cite this page
You're welcome to quote or link to this guide. Please credit BroadbandSwitch.uk and link back to this page.
Martin-Smith, A. J. (2026, October 20). 5G broadband struggling in a busy house? Here's what to do. BroadbandSwitch.uk. https://broadbandswitch.uk/insights/5g-broadband-struggling-busy-house-what-to-do/ In a sentence: BroadbandSwitch.uk's October 2026 guide explains that 5G home broadband can slow in the evening because it shares a local mast's capacity, that full fibre showed the least busy-time congestion of any line type in Ofcom's 2023 data and reached 82% of UK homes in January 2026, and sets out how a busy or shared house can test, compare, install and switch to a fixed line without losing service.
Frequently asked questions
Why is my 5G home broadband slow in the evening?
5G home broadband shares the local mast with every phone and hub nearby, so when lots of people go online after work and school there's less capacity to go round. Opensignal's 2023 data found 4G and 5G users were slowest between 6pm and 9pm. Moving the hub to a window can help, but it can't add capacity to a busy mast.
How can I tell if it's my Wi-Fi or my broadband?
Run a speed test at about 8pm right next to the router, or plugged in with a cable. If it's slow there too, the connection is the problem. If it's fast next to the router but slow in other rooms, it's the Wi-Fi, and RouterMap can show you a better spot for the router.
Is full fibre more reliable than 5G home broadband?
At busy times, usually yes. Full fibre runs to your home rather than sharing a mast, and Ofcom found the effect of busy-time congestion was lowest for full fibre lines in its March 2023 data. The provider's service matters too, so check recent reviews before you choose.
What's the difference between FTTC and FTTP?
FTTC, or part fibre, runs fibre to the street cabinet and uses the copper phone line for the last stretch, so speed depends on how far you are from the cabinet. FTTP, or full fibre, runs fibre all the way into your home. On BroadbandSwitch.uk deal cards, FTTC shows as Hybrid Fibre and FTTP as Full Fibre.
Is part fibre (FTTC) good enough for a shared house?
Often, yes, for downloads. A busy evening for five people can need around 33Mbps down by our arithmetic, within part fibre's 76Mbps maximum, though our students guide suggests 100 to 150Mbps for comfortable headroom. The pinch is upload: Openreach part fibre uploads at up to 15Mbps, and five people on video calls can need 12.5Mbps.
Does full fibre need an engineer to install it?
Usually, the first time. The engineer brings the fibre into the house, fits a small fibre box on an inside wall and connects the router. Part fibre can sometimes be switched on with just a new router if there's already a working line.
Will full fibre installation cost extra?
Many deals list a set-up cost on the deal card, and some are free. If your property needs extra work, such as a long cable run or work outside, it can take longer or cost more. Ask the provider about installation dates and any extra costs before you order.
How fast is the upload on full fibre?
It depends on the network and the plan. Some full fibre plans upload as fast as they download: Hyperoptic's 150Mb plan averages 157Mbps upload, for example. Others upload at a fraction of the download speed, so check the upload figure before you buy if video calls and big uploads matter.
Can I switch from 5G home broadband with One Touch Switch?
Often, yes. One Touch Switch covers home broadband that's plugged in at a fixed address, which can include 4G and 5G home broadband, and Three says One Touch Switch is the easiest way to move to a new provider. Ask your new provider when you order whether they'll handle it for you.
Should I cancel my 5G before the new broadband is installed?
No. Keep the 5G running until the new line is working, so nobody is left offline. Then end the contract: Three, for example, asks for 30 days' notice, may charge an early termination fee if you're still in contract, and asks for its hub back.
How do I check a broadband provider's customer service?
Read the provider's recent Trustpilot reviews, not just the star rating, and look at Ofcom's quarterly complaints figures and its annual customer service comparison. Check whether the provider pays automatic compensation for delayed repairs, missed appointments and late installations.
Can a landlord use home broadband for tenants?
It depends on the provider's terms. Many home broadband contracts are written for one household's own use, so check the terms or ask the provider before you order. Our guide to broadband for HMO landlords looks at what the main providers' terms say.
References
- Advertising Standards Authority. (2018, May 23). New standard on broadband speed claims in ads comes into force today. Retrieved 20 October 2026, from https://asa.org.uk/news/new-standard-on-broadband-speed-claims-in-ads-comes-into-force-today.html
- Hyperoptic. (n.d.). Full fibre broadband plans [Home page]. Retrieved 20 October 2026, from https://www.hyperoptic.com
- ISPreview. (2024, April 25). TOTSCO clarifies UK switching rules for wireless broadband networks. Retrieved 20 October 2026, from https://www.ispreview.co.uk/index.php/2024/04/totsco-clarifies-uk-switching-rules-for-wireless-broadband-networks.html
- Jackson, M. (2023, June 30). UK 5G vs 4G mobile broadband speeds at different times of day. ISPreview. Retrieved 20 October 2026, from https://www.ispreview.co.uk/index.php/2023/06/uk-5g-vs-4g-mobile-broadband-speeds-at-different-times-of-day.html
- Microsoft. (n.d.). Examine network requirements for Microsoft Teams. Microsoft Learn. Retrieved 20 October 2026, from https://learn.microsoft.com/en-gb/training/modules/plan-configure-network-settings-for-microsoft-teams/02-examine-network-requirements-microsoft-teams
- Netflix. (n.d.). Netflix-recommended internet speeds. Netflix Help Centre. Retrieved 20 October 2026, from https://help.netflix.com/en/node/306
- Ofcom. (n.d.). Broadband and mobile coverage checker. Retrieved 20 October 2026, from https://www.ofcom.org.uk/phones-and-broadband/coverage-and-speeds/ofcom-checker
- Ofcom. (2023, September 14). Latest home broadband performance trends revealed. Retrieved 20 October 2026, from https://www.ofcom.org.uk/phones-and-broadband/coverage-and-speeds/latest-home-broadband-performance-trends-revealed/
- Ofcom. (2024, September 12). Simpler broadband switching is here. Retrieved 20 October 2026, from https://www.ofcom.org.uk/phones-and-broadband/switching-provider/simpler-broadband-switching-is-here
- Ofcom. (2025, May 22). Comparing customer service: Choosing the best home broadband, mobile and landline provider (reissued 18 September 2026). Retrieved 20 October 2026, from https://www.ofcom.org.uk/phones-and-broadband/service-quality/report
- Ofcom. (2026, May 13). Connected Nations update: Spring 2026. Retrieved 20 October 2026, from https://www.ofcom.org.uk/phones-and-broadband/coverage-and-speeds/connected-nations-update-spring-2026
- Ofcom. (2026). Report: Complaints about broadband, landline, mobile and pay-TV services (updated 30 July 2026). Retrieved 20 October 2026, from https://www.ofcom.org.uk/research-and-data/multi-sector-research/telecoms-complaints-data
- Openreach. (n.d.). Fibre to the cabinet broadband. Retrieved 20 October 2026, from https://www.openreach.com/fibre-broadband/superfast-fibre-broadband
- Opensignal. (2023, June 29). 5G is more consistent than 4G across all hours of the day in the UK. Retrieved 20 October 2026, from https://insights.opensignal.com/2023/06/29/5g-is-more-consistent-than-4g-across-all-hours-of-the-day-in-the-uk
- Three. (n.d.). Cancelling Home Broadband. Retrieved 20 October 2026, from https://www.three.co.uk/support/switching/leave-three/cancel-your-home-broadband-contract.html
Written by Dr Alex J. Martin-Smith, Founder (LinkedIn). Reviewed by Adrian James, Broadband Editor at BroadbandSwitch.uk (LinkedIn). Published 20 October 2026. BroadbandSwitch.uk is an independent comparison site and is not a broadband provider. Speeds and prices vary by address, provider and sign-up date. This article is based on the conversations we have with callers every week; no caller is named and no address is shown. Corrections are logged publicly.