How to test your network for a multiplayer session

Your multiplayer game lags, disconnects, or shows a ping that jumps around. A single speed test may not explain why: games need a steady connection, and delays can rise when someone else downloads or streams.

Use the same short test routine before and during a session to narrow down the cause. TooLab's browser tests can check speed, connection stability, and delay under load. They test your connection to our servers, not the route to the game server, so use them as clues rather than a guarantee of in-game performance.

Run the checks in a repeatable order

1. Keep the setup consistent. Use the same computer or console, network, room, and connection type for each comparison. Note whether you are on Wi-Fi or Ethernet, the time, and whether other devices are using the network.
2. Measure your baseline speed. Open the Speed Test and run it when downloads, cloud backups, and video streams are paused. Record download speed, upload speed, ping, and jitter. Run checks one at a time, not simultaneously. The speed test exchanges test data with our server to measure the connection.
3. Look for interruptions. Run Connection Stability for a few minutes while the network is otherwise quiet. Note the response time, jitter, lost requests, and any dropouts.
4. Check what happens under load. Run the Bufferbloat Test to see how much response delay grows while downloading or uploading. Avoid starting other tests or large transfers at the same time.
5. Check the Wi-Fi where you play. If you use wireless, open Wi-Fi Signal near your gaming setup. It measures response time, jitter, and drops, not the radio signal's strength in dBm. If possible, repeat the checks while the lag is happening, but do not run a download speed test during a match.

Write the results down before changing anything. Then change one thing, such as moving closer to the router, and repeat the same checks. This makes it easier to tell whether the change helped.

What the results mean

Ping is steady and there are no lost requests

Your connection to the test server looks consistent during the check. That is useful, but it does not prove the route to the game server is clear. If the game still lags, compare its in-game ping and connection indicators with the time of each browser test.

Ping is high but changes very little

A steady delay can come from distance to the test server or the route between you and it. The game server may be in a different region, so its ping can be higher or lower. Choose a nearby game region when the game offers that option. There is no single ping number that is good for every game and player.

Jitter or lost requests appear

Jitter means the delay varies between requests. Lost requests mean some test messages did not get a response in time. Either can feel like rubber-banding or brief freezes. A browser test can reveal a problem somewhere on the path to its server, but cannot identify the exact cause or prove that game packets are being lost.

Delay rises during the Bufferbloat Test

Your connection becomes less responsive when it is busy. Another device uploading video, backing up files, or downloading a game update may contribute. This can affect gameplay even when your download speed looks fast.

Speed is low, but the connection stays stable

Low speed by itself does not always explain lag. Multiplayer games often need less bandwidth than a large download or high-quality video stream, but an update or another user's activity can fill the connection. Check whether the slow speed is below your plan's expected range, and whether it changes at the time the game becomes unresponsive.

How to improve the connection

1. Pause other network activity. Stop game downloads, cloud backups, and large uploads on your computer and other devices. Retest before deciding that the router or internet plan is the problem.
2. Use Ethernet if you can. A cable removes Wi-Fi interference and weak coverage from the connection between your device and router. If you must use Wi-Fi, try playing in the same room as the router and keep it in an open location.
3. Check the selected network. On Windows 11, open Settings › Network & internet › Wi-Fi and confirm you are connected to the intended network. On macOS, open System Settings › Wi-Fi. If your router offers multiple bands, try the one that gives a steadier result in your gaming area, then repeat the checks.
4. Restart the router and your device. If the problem affects several devices, restart the router using its normal power procedure. If only one device is affected, restart that device too, then test again before launching the game.
5. Check the game region and server status. Select a nearby region if available. If the game alone has high ping while other checks remain steady, the issue may be the game server or its route, rather than your home Wi-Fi.
6. Review router traffic settings carefully. If your router has Quality of Service or smart queue settings, change one setting at a time and compare the same tests. A setting can improve delay under load, but it can also reduce peak speed or make results worse.

Read the results as a session, not a single score

Run the routine when the network is quiet, then repeat the relevant checks when the problem appears. Keep the device, location, and connection type the same. A steady browser result alongside a jumpy in-game ping points attention toward the game server, the route to it, or the game itself. If both show interruptions at the same time, start with local Wi-Fi and other network activity.

Browser tests cannot see the game's exact server path or measure every cause of lag. Use the game's own ping display alongside the checks, and treat a single unusual result as a reason to retest rather than a final diagnosis.