1 Gbps Fiber, but Wi-Fi Is Slow? How to Fix It
Paying for 1 Gbps fiber but seeing 150-300 Mbps over Wi-Fi? Check your router placement, Wi-Fi band and Ethernet cable before upgrading.
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A common source of confusion after you get fiber is that the speed in your internet plan describes the connection to your home, not the speed reaching a laptop in the next room. Between the two are your router, cabling and Wi-Fi - and that is where much of the throughput can disappear.
What this means for your internet speed
If you pay for 1 Gbps and a speed test on your phone shows 150-300 Mbps, your provider may not be the problem. Your home network could be. Three common causes are a poorly placed router, devices using 2.4 GHz instead of 5 GHz, and an Ethernet cable that is older than your fiber connection. You can check all three in about 15 minutes and fix them without spending anything - or by spending a modest amount on a cable.
This is the editor’s view, not a finding from the source material: before ordering a faster plan from your provider, check whether your current connection reaches your devices. Paying extra for a faster connection that your home network cannot carry is money wasted.
First, measure the speed you actually get
A speed test on a phone in the kitchen tells you nothing about your internet connection. It tells you about Wi-Fi in the kitchen. To separate the two, you need two measurements.
First, connect a computer directly to the router with an Ethernet cable and disconnect everything else from the network while you test. This shows the actual speed of your connection. Then run the same test over Wi-Fi from the place where you work. The difference between the two results is the loss on your wireless network - and that is what you need to optimize.
If the wired measurement is also far below the speed in your plan, that is the time to contact your provider. When you make a complaint, give them the wired test result - they may reject a Wi-Fi measurement as unreliable.
Where to put your router
Installers often put the router where the fiber enters your home - usually in a hallway, sometimes inside a cabinet. That can be a poor choice for signal propagation. 5 GHz signals do not pass easily through load-bearing walls, and reinforced concrete can block them almost entirely.
The rules are simple: put the router as close to the middle of your home as possible, at least desk height, and not inside a cabinet, behind a TV, or next to a microwave or cordless phone. If the fiber outlet is in an awkward spot, run an Ethernet cable to a better location - the router does not have to sit next to your provider’s outlet.
2.4 GHz vs. 5 GHz: which should you use?
Most routers broadcast on two frequency bands. Many use the same network name for both by default, leaving your device to choose which one to connect to. It may pick the slower band simply because its signal is stronger.
| Feature | 2.4 GHz | 5 GHz |
|---|---|---|
| Range | Longer; passes through walls better | Shorter; passes through walls less effectively |
| Throughput | Lower | Much higher |
| Congestion | High - neighbors, household appliances and Bluetooth | Lower |
| Best for | Sensors, smart plugs and devices in a basement | Laptops, consoles, TVs and 4K streaming |
A practical fix is to give the two bands separate network names, such as “Home” and “Home-5G,” then manually connect devices that need higher speeds to the 5 GHz network. Leave smart-home devices on 2.4 GHz: they generally need range more than bandwidth.
Check the Ethernet cable
With a 1 Gbps connection, a Category 5 Ethernet cable without the “e” can become a bottleneck. Check the marking printed on the cable jacket: look for Cat 5e, Cat 6 or Cat 6a. Cat 5e is enough for gigabit speeds; higher categories make sense if you plan to get a connection faster than 1 Gbps.
Another potential bottleneck is your router’s port. Older models may have 100 Mbps LAN ports, limiting a gigabit connection to one-tenth of its speed over a wired connection. Look for “Gigabit Ethernet” in your router’s specifications. If it is not listed, you may need a new router, no matter how well you position it.
Mesh Wi-Fi vs. a Wi-Fi extender
A Wi-Fi extender, or repeater, rebroadcasts the signal it receives. If you place it where reception is already poor, it repeats a weak signal and can also cut throughput. A mesh system creates one network using several access points that communicate with each other, allowing your devices to switch between them seamlessly.
In a single-level home up to 60-70 m², a well-positioned router is usually enough. In a multistory house or a long home with many walls, mesh can make a real difference. Two-node mesh kits start at a few hundred Polish zlotys in Poland - but first check whether your provider includes mesh with your plan, as some do.
What to do at home
- Run a speed test on a computer connected to the router by cable, with other devices disconnected. Write down the result.
- Repeat the test over Wi-Fi where you work. Compare the results.
- Check the marking on your Ethernet cable. If it is Cat 5 without the “e,” replace it.
- Check your router’s specifications to see whether its LAN ports are gigabit-capable.
- Open your router’s settings and give the 2.4 GHz and 5 GHz bands separate network names.
- Manually connect your laptop, TV and console to 5 GHz; leave other devices on 2.4 GHz.
- Move the router to the middle of your home, place it up high, keep it out of cabinets and away from the microwave.
- Run another Wi-Fi test. Consider mesh only if speeds are still poor in distant rooms.
Source
Antyweb - “How to get the most out of your home fiber connection?”, accessed October 15, 2026. The source discusses router placement, improving Wi-Fi coverage and making sensible use of fiber. The specific thresholds and equipment recommendations in this article come from the editor and are identified as opinion where they do not follow directly from the source.
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