How to compare Wi-Fi jitter on two floors

Video calls stutter upstairs, but seem fine downstairs. Or a game feels delayed in one room even though your Wi-Fi icon shows a strong connection. Comparing jitter in the same way on both floors can help you find out whether the connection changes with location.

Use the Wi-Fi Signal tool to watch response time, jitter, and lost requests. It does not read your router’s radio signal strength in dBm, so the results show how the connection behaves, not a signal-strength number.

Compare jitter on both floors

1. Open the Wi-Fi Signal tool on the device you normally use. Keep the same device and browser for every check.
2. Choose a downstairs spot where you usually use Wi-Fi. Put the device on a stable surface, keep it in the same orientation each time, and leave it still.
3. Watch the response time, jitter, and lost-request readings for about a minute. Note the typical values and any sudden spikes or drops. Avoid starting a download or video stream during the measurement.
4. Repeat the check in the upstairs spot where you notice trouble. Use a similar position, such as a desk or table, rather than comparing a device beside the router with one behind furniture.
5. Run each check two or three times. If the readings change from one run to another, repeat both locations at a similar time and compare the overall pattern, not just the best result.

Write down the room, floor, approximate time, jitter, and whether requests were lost. If your home has mesh nodes or multiple access points, note which one the device appears to be using if you can see that in your router’s app. The upstairs device may have switched to a different node, which can affect the comparison.

What the results mean

Jitter stays low and similar on both floors

The response time is varying by a similar amount in both places during these checks. That does not prove every app will work perfectly, but it makes a location-specific Wi-Fi problem less likely. If one app still struggles upstairs, check its settings and whether that app is using a different connection, VPN, or device.

Jitter is higher upstairs each time

A repeatable increase upstairs suggests the wireless path is less consistent in that location. Walls, floors, metal objects, and distance can weaken or interfere with Wi-Fi. The tool cannot identify which physical obstacle is responsible, and a high jitter reading is not a direct measurement of radio signal strength.

Jitter spikes or requests are lost in both places

This points to a connection that is unstable more broadly, rather than a problem confined to the upstairs room. Other devices using the network, router congestion, interference, or an issue with the internet service may contribute. A short test alone cannot tell which one is responsible.

Results change a lot between repeated runs

Wi-Fi conditions can change as devices move, access points switch, or other people use the network. Repeat the comparison at the same time of day and with similar household activity. One unusually good or bad reading is not enough to decide whether a floor has a persistent problem.

How to improve the upstairs connection

1. Move the device into the open. Test on a table rather than inside a cabinet, beside a large metal object, or behind a TV. Keep the device in the same position while comparing results.
2. Check which Wi-Fi network you joined. On Windows 11, open Settings › Network & internet › Wi-Fi and confirm the connected network. On macOS, open System Settings › Wi-Fi. If your router has separate network names for different bands, make sure you are comparing the same one on both floors.
3. Restart the router or access point. If the problem affects several devices, restart the router using its normal power procedure, then repeat the checks after it reconnects. Avoid resetting it to factory settings unless you are ready to configure it again.
4. Check your mesh or extender placement. A node placed in the weak room may itself receive a weak connection. Move it to a spot between the router and the problem area, then compare the readings again. Follow the placement guidance in your router or mesh system’s app.
5. Reduce competing network use. Pause large downloads, backups, and video streams on other devices, then repeat the same tests. If jitter improves, network traffic may be adding delay rather than the upstairs location alone causing it.
6. Compare with a wired connection if possible. Run the same Wi-Fi Signal check on a computer connected to the router by Ethernet. If the wired result is steady while both wireless locations fluctuate, focus on Wi-Fi coverage or interference. If wired and wireless checks are both poor, contact your internet provider or investigate the router and service connection.

Why jitter is not the same as Wi-Fi bars

Jitter describes how much response time varies. For example, a connection that usually responds in 20 milliseconds but sometimes takes 100 milliseconds is less consistent than one that stays near 25 milliseconds. The Wi-Fi Signal tool checks the effect on the connection through response time, jitter, and lost requests. Browsers cannot read the Wi-Fi radio’s signal strength in dBm, so this test cannot tell you a precise signal level or diagnose the router’s radio hardware by itself.

For a fair comparison, keep the device, network, and test conditions consistent, then use repeated readings to decide whether one floor is reliably worse.