Troubleshooting

Why Is My Wi-Fi Slow?

Investigate slow Wi-Fi with controlled location, device and Ethernet comparisons, accounting for the band, load and path to the Internet.

Wi-Fi can limit use of a fast Internet connection, but a slow page or video does not prove a wireless fault. Obstacles, other transfers, device capabilities and the path from an access point to the Internet can affect the result. First identify the task that is slow and the conditions under which it happens.

Record conditions before changing settings

Write down the task, service, time and location. Distinguish low transfer speed, long waits and complete disconnections; they require different comparisons.
Note the device, adapter and software version. Record the Wi-Fi band and access point if visible. In a mesh network, the same network name does not always mean the same access point.
Check your own video streams, cloud backups and large transfers. Temporarily reduce your other traffic for the comparison, then resume it. Run speed tests separately so they do not compete with each other.
Save relevant errors and router status before restarting. Record the original configuration before changing it. Keep required protection, VPN and administrator rules in place.

Understand what the measurement covers

Use the same device, method and test server at comparable times; record download, upload and latency with units. NDT measures a TCP transfer over the path to an Internet server, not just the radio link. Signal bars and the link rate displayed by the operating system are not the Internet data-transfer rate. A rate of 1 MB/s corresponds to 8 Mbps. Repeat the real task too: a fast test does not guarantee fast performance from a particular service.

Compare one condition at a time

Test the same device at its usual location, then closer to the router, noting changes in band or access point. If supported, compare Ethernet on a suitable router LAN port; cable, port and adapter limits can affect that result too.
Try another device at the same location and on the same service. A difference is a clue about the device or connection, not proof of a faulty adapter or router.
If the problem occurs through a particular mesh node or extender, check that point's connection to the rest of the network using the manufacturer's instructions. Strong signal from a nearby point does not guarantee a good onward connection.
If the device and model allow it, compare available bands separately at the same location. 5 GHz is not always faster, and 2.4 GHz does not guarantee coverage. Splitting network names is not a universal fix; Apple recommends one name for all bands.

Improvement near the router suggests examining location and the radio path. Better Ethernet suggests further investigation of Wi-Fi and device conditions; it does not prove that the entire Internet path is clear. If both connections are slow or only one service is affected, also investigate load, the device and the service path. Repeat comparisons rather than selecting a single highest result.

Make changes that fit the model

Try a suitable router location near the areas you use, outside a closed cabinet. Maintain ventilation, stability and cable limits. Follow model instructions for antennas and mounting instead of assuming one height or angle works for every router.
Before changing channel, channel width or radio settings, check official guidance and save the original state. Apple recommends automatic channel selection and 20 MHz on 2.4 GHz for its devices; these are not promises of the best result in every network. Change one thing, retest and undo it if needed.
Use official device, adapter and router updates and suitable diagnostics. In Windows 11, use Get Help and review proposed changes. On a Mac, open the Wi-Fi menu while holding Option and select Wireless Diagnostics; that tool does not change network settings.
If restarting is appropriate, save observations and finish important work first; other users will also disconnect. Follow model instructions and wait for actual readiness. Age alone is not a reason to replace equipment, and a factory reset or disabling protection is not a general speed remedy.

After a change, return to the same locations, tasks and conditions to check whether improvement repeats. Give the relevant support team the devices, access points, bands, times, load and comparison results, without claiming the provider has been ruled out. Remove passwords, identifiers and personal data before sharing reports or screenshots privately. Consider replacement equipment or a faster plan only in response to a demonstrated limitation and after checking compatibility requirements.