Weak or slow Wi-Fi in one room?

Does Wi-Fi work on the sofa but struggle at your desk? Take the same device closer to the access point, then try a cable if you can. Repeat the comparisons before spending money on equipment.

Same-device Wi-Fi and Ethernet comparisons. Windows and Mac instructions.

By Jerrod Vick

Technical content updated November 5, 2026

All sections in this guide

Save a baseline where the problem happens

Change one condition. Keep the same device and profile.

Usual Wi-FiRecord the problem location and other traffic.
Near the access pointChange location. Keep traffic similar.
Ethernet to main routerCompare separately. Replace the wireless link from your device.

Finish active calls or games. The scan generates traffic and can interrupt them.
Keep the usual device in the problem location. Note who else is using the connection and which transfers are active.
Run a check with the tab visible. Save its result link and note the profile you selected.
Move close to the router or access point. Keep the device, profile, and background traffic similar. Run again.

Compare idle response, variation, and added delay as well as Mbps. Lower data skips upload and relay loss. One better run gives you a lead. Repeat both checks to see if the difference holds.

Check the Windows Wi-Fi connection

This read-only command adds local information that the browser scan cannot see. Open a normal Command Prompt, then run:

Windows Command Prompt · Read-only check

netsh wlan show interfaces

Runs only when you paste it into your terminal and press Enter.

Fields to compare in each location · made-up readings to help you find the right fields

State                  : connected
Radio type             : 802.11ax
Receive rate (Mbps)     : 144
Transmit rate (Mbps)    : 144
Signal                 : 58%

Check State. If disconnected, reconnect through the Windows Wi-Fi menu before comparing scans.
Record Signal and the receive/transmit rates where the problem occurs.
Run the command again near the access point. Look for a repeatable change, rather than judging one signal percentage.

Link rates describe the Wi-Fi connection, not measured internet throughput. Signal percentages are adapter-reported estimates. No percentage here is a universal fault threshold.

The command reports access denied or asks for location permission?

Windows location permissions can block access to Wi-Fi details. That tells you about permissions, not connection quality. Skip the command if you prefer. You can still try a closer spot and an Ethernet cable. Review Windows privacy settings only if you choose to grant access. Keep SSID, BSSID, and physical-address fields out of public screenshots.

Use Wireless Diagnostics on Mac

Save your work and close other apps. Connect to the Wi-Fi network you want to check.
Open Wireless Diagnostics using the menu path above.
Follow the analysis. In Summary, open the information buttons for specific explanations.
Apply one relevant suggestion and repeat your scan in the same location.

The tool analyzes Wi-Fi without changing network settings. Keep its diagnostic archive private. It can contain network details. Do not upload that archive to this site.

Make the wired comparison

Connect the same device by Ethernet to the main router, using an adapter if needed. A mesh point with wireless backhaul still has a wireless link upstream.
Confirm the device is using Ethernet. Temporarily switch Wi-Fi off if needed. Restore it after the comparison.
Keep other traffic the same as the baseline. Run the same scan profile with the tab visible.
Save both links. Record connection method and location separately because shared links exclude those details.
Repeat the pair. If the wired rate looks unexpectedly low, check the adapter's link speed.

Ethernet replaces the device's wireless link. It still uses the router, provider, and remote destination.

Choose your next step

Use repeated comparisons, not a single winning number
Pattern	Try next
Better near the access point	Try an open placement away from obstructions. Compare again from the original problem location before buying coverage equipment.
Better only over Ethernet	Compare another Wi-Fi device in the same location. Check vendor updates for the affected adapter or access point.
Poor on Wi-Fi and Ethernet	Check gateway replies, then compare another device and time. Several parts of the shared connection could be involved.
Scans look healthy, but one app struggles	Use the call's health panel or the game's own statistics. Their routes can differ from Cloudflare.

No Ethernet port? Repeat near the access point and with another device. Note which conditions changed. Switching to mobile data changes the whole network.

Sources and app instructions

Can't find the menu? Your app or operating-system version may use different labels. Try the official instructions below. The example readings in this guide are made up to show you what to look for.

What to save for support

Keep paired readings and separate notes for location, connection method, device, and background traffic. Repeat the pair before choosing equipment or settings.

Which Wi-Fi network should I use from this room? See a three-network comparison, the troubleshooting report, and how the chosen connection worked afterward.

Start a Wi-Fi baseline

Report an unclear step or an error · Data use and privacy