When the internet misbehaves, the provider gets the blame. Often it deserves it. But routers age badly and fail gradually, and a tired one produces symptoms that look exactly like a bad broadband service. Here is how to tell them apart.
The test that settles it
Connect a computer to the router with an Ethernet cable and run our speed test. Then run it again on Wi-Fi, in the same room.
- Wired is good, wireless is poor: the router radio or its placement is the problem, not your line.
- Both are poor: either the line genuinely underperforms, or the router is failing as a whole. Continue below.
- Both are good, but the house still feels slow: the issue is coverage in specific rooms. See improving Wi-Fi coverage.
Symptoms that point at the router
Performance collapses as devices join
A healthy modern router handles dozens of connected devices. If everything is fine in the morning and unusable when the family comes home. While a wired test stays fast. The router is running out of processing capacity rather than the line running out of speed.
It needs regular restarting
The classic sign of failing hardware or exhausted memory. A router that must be power-cycled weekly to stay usable is telling you plainly that it is finished. Restarting fixes it temporarily because it clears the memory that is leaking.
Latency spikes whenever anything downloads
If your ping is fine when idle but climbs into the hundreds of milliseconds the moment someone uploads photos or a game updates, the router is queueing far too much data. This is bufferbloat, and MyRealSpeed measures it directly as latency-under-load during the transfer phases. Routers with smart queue management (often labelled SQM or QoS) largely eliminate it; older ones cannot. Our Results Guide explains the figures.
It runs hot
Routers are passively cooled and throttle or crash when they overheat, which is why problems can worsen through the day or in summer. If yours is warm to the touch and boxed in, give it air and see whether the pattern changes.
Wi-Fi drops but the connection stays up
Devices disconnecting and reconnecting while a wired machine sits happily online isolates the fault to the wireless side.
Age and standards
Routers do not have a fixed lifespan, but a practical guide is five to six years. Beyond that you are typically running an older Wi-Fi standard with weaker hardware and, importantly, no continuing security updates. A router supplied free with a contract several years ago was rarely generous hardware at the time.
Before you replace it
- Update the firmware. Genuine performance and stability bugs get fixed this way, and it is free.
- Restart it properly. Unplug for thirty seconds rather than a quick off-and-on.
- Check what is plugged in. A damaged Ethernet cable or a failing splitter can imitate every symptom above.
- Try the provider modem alone, if your setup separates modem and router, to see which box is at fault.
If the wired result is also poor at every hour of the day, gather evidence before calling. Our guide to documenting poor performance shows what support teams actually act on.
Frequently asked questions
Is a bought router better than the provider one?
Usually, especially for Wi-Fi range, device capacity, and queue management. Check first that your provider supports your own equipment, since some services need specific settings or hardware.
Does resetting to factory settings help?
Sometimes. Accumulated configuration changes can cause odd behaviour. Note your settings first, because you will have to set the network name and password again.
Can a router limit my speed even when wired?
Yes. Older routers have slower internal processing and sometimes only 100 Mbps ports, which caps a faster plan regardless of what the line delivers. Check the port specification if your wired result sits suspiciously close to 100 Mbps.
