A wider Wi-Fi channel can support a higher data rate, but it also occupies more radio spectrum. In a crowded environment, selecting the largest available width is not automatically the best choice for consistent work. Treat a width change as a measured experiment.

First identify the affected band, access point and client. Record the current channel and width, along with a repeatable symptom such as interruptions during a local file transfer. Keep the client in the same position during the comparison so a movement through the building does not become a second variable.

Change one radio parameter

TP-Link explains the tradeoff between wider channels, available spectrum and interference. If the device's supported settings offer a narrower width, have the network owner select one appropriate to that band and environment. Record the original value before saving.

Expect a wireless interruption when radio settings change and schedule accordingly. Leave the region setting correct for the installation. Do not copy a channel list from another country simply because an online example shows more options.

Repeat the same task after the client reconnects. Record completion time, interruptions and whether other relevant devices remain connected. A lower displayed connection rate can still accompany a more consistent task, while a higher rate can coexist with repeated retries.

Keep the result tied to conditions

Compare at similar times if neighbouring activity changes substantially during the day. One short successful test does not establish that the change solved an intermittent problem. Include the work devices that matter, rather than relying only on a newer phone beside the access point.

If there is no useful improvement, restore the original setting and preserve the observations. Continue checking placement, client capability and other sources of interference as separate questions. The decision to keep the narrower width should rest on repeatable work results and compatibility, not on a rule that narrow or wide channels are always better.

References: TP-Link channel-width explanation.