How to Fix Lagging Video in Microsoft Teams

Lagging video in Microsoft Teams usually has one of four sources: the network connection, the computer's processing load, the camera and its connection, or the Teams app or browser itself. The fastest fix depends on which of these is responsible, so this guide starts with quick checks that narrow the cause before you change any settings.

The short answer

Teams video most often lags because the connection can't carry the video smoothly, or because the computer is too busy to capture, process and send it in real time. Background blur and other video effects, many open apps or browser tabs, weak Wi-Fi, a VPN, or large uploads running at the same time are common contributors. Less often, the camera itself, its cable or USB hub, or an outdated version of Teams is the problem.

First, work out whose video is lagging, because the answer changes where you look:

• Other people say your video is choppy or frozen, but theirs looks fine to you: the problem is on your side, either in your camera, your computer or your upload connection.
• Everyone else's video lags for you, but they see you normally: look at your download connection or your computer's ability to display several video streams.
• Your own self-view preview is choppy even before you join a call: the problem is likely the camera, its connection, lighting or local processing, not the network.
• Everyone in the meeting has problems: the cause may be shared, such as a busy office network or a service issue, and fixing your own setup may not help.

Why video lags: a brief explanation

A video call is a chain. The camera captures frames, the computer compresses (encodes) them, the network carries them to Teams, and each other participant's computer decodes and displays them. Lag or freezing appears when any link in that chain falls behind. Teams adjusts video quality to match the available connection, so a poor connection often shows up first as blurry or blocky video, then as stutters or freezes.

It also helps to keep three things separate. Teams having permission to use the camera means only that it can access the device. Successful capture means the camera is actually producing a picture. Smooth call quality means that picture is reaching other people reliably. A camera can pass the first two checks and still lag in calls.

Before you start

• Close and reopen Teams fully, including any Teams icon in the system tray or menu bar, so you start from a clean state.
• Note whether you are using the Teams desktop app, the web version in a browser, or a mobile app, since some settings differ.
• If the device is managed by an employer or school, some options may be locked by your IT administrator.

Step-by-step fixes, from quickest to most involved

1. Check your self-view preview

Open Teams settings, go to the devices section, and look at the camera preview. Wave your hand slowly in front of the camera.

How to tell: if the preview is smooth, the camera and local capture are working and the lag is more likely in the network or during the call itself. If the preview already stutters, focus on steps 2 to 4 before looking at the network. This check does not test your connection or how others see you.

2. Improve lighting

In dim light, many webcams lengthen their exposure to brighten the image, which can lower the number of frames they capture each second and make movement look jerky. Face a window or lamp and avoid strong light directly behind you.

How to tell: check the preview again. If motion is noticeably smoother in better light, lighting was at least part of the cause.

3. Turn off background effects

Background blur, virtual backgrounds and other video filters require the computer to analyse every frame, which adds processing load. In Teams these are found in the video effects or background settings, either before joining or during a call. Set the background to none for a test.

How to tell: if your video becomes smoother, the computer is struggling with the effect. You can keep it off, try a simpler effect, or reduce other load (step 4) and test the effect again. Keep in mind that with effects off, your real surroundings are visible, so check what is behind you before your next call.

4. Reduce load on the computer

• Close other apps that may use the camera, such as other video-calling or recording software. Only one app may be able to use some cameras reliably at a time.
• Close unneeded browser tabs and heavy programs.
• On Windows, open Task Manager; on a Mac, open Activity Monitor. Look at whether the processor (CPU) or memory is near its limit during a call.
• On a laptop, plug in the charger. Some laptops reduce performance on battery or in power-saving modes.

How to tell: if CPU or memory usage was very high and video improves after closing programs, processing load was the cause. If usage was low and lag continues, move on to the connection and camera checks.

5. Check the network connection

• Move closer to your Wi-Fi router, or use a wired Ethernet connection if possible.
• Pause large uploads and downloads, such as cloud backups, file syncing or game updates, on your device and others on the same network.
• If you use a VPN, try a call without it if you are allowed to. VPNs can add delay and reduce throughput.
• Restart your router if other devices are also seeing slow connections.

Video calls depend on upload speed as much as download speed, and many home connections have much less upload capacity than download. A general speed test can show whether your upload is unusually low or inconsistent, but it does not show exactly what Teams experiences during a call. This guide does not give a specific bandwidth target because no verified figure was provided for it here; Microsoft publishes network requirements for Teams, and its current guidance is the place to check exact numbers.

How to tell: if lag disappears on a wired connection, closer to the router, or without the VPN, the network was the bottleneck.

6. Check the camera connection

• For an external webcam, plug it directly into the computer instead of through a USB hub, monitor or dock.
• Try a different USB port, and if the camera has a removable cable, try another cable.
• If the computer also has a built-in camera, select it in Teams' device settings and compare.

How to tell: if the other camera or port gives a smooth preview, the original connection or camera is the likely problem. If both cameras lag the same way, the cause is more likely the computer, app or network.

7. Update Teams, the browser and the operating system

Install any available updates for Teams, your operating system, and the camera or graphics drivers if your computer maker supplies them. If you use Teams in a browser, update the browser. If the camera maker provides companion software, check whether it is applying its own effects or processing, which could add to the load.

How to tell: restart the computer after updating and check the preview and a call again.

8. Try the other version of Teams

If you normally use the desktop app, join a meeting through Teams in a supported web browser, or the other way round. If one works smoothly and the other doesn't, the problem lies with that specific app or browser setup rather than your camera or network. Clearing the Teams cache or reinstalling the app is a further step, but if your device is managed by an organisation, check with IT before doing this.

If other people's video lags for you

• Switch from a gallery view showing many participants to a speaker view showing fewer, which reduces how many streams your computer has to decode and display.
• Turn off your own camera temporarily to see whether freeing upload capacity and processing helps.
• If your version of Teams offers an option to turn off incoming video, use it as a last resort to keep audio stable during an important call.
• Apply the network and computer-load checks from steps 4 and 5.

Narrowing down the cause

What you notice | Likely area | What to try next

Self-view preview is choppy before joining | Camera, lighting, USB connection or computer load | Steps 2, 3, 4 and 6

Preview is smooth, but others see lag | Upload connection or in-call processing | Steps 3, 4 and 5

Video improves with background effects off | Computer processing | Keep effects off or reduce other load

Video improves on a wired connection or without VPN | Network | Keep the better connection for calls

Other participants' video lags for you | Download connection or display load | Switch views and check the network

Only one version of Teams lags | App or browser | Update, then reinstall or switch versions

Everyone in the meeting has problems | Shared network or service | Check with the organiser or IT

These are likely areas, not certain diagnoses. More than one cause can apply at once, for example a weak connection combined with a heavy background effect.

How to confirm the fix worked

After each change, check the camera preview first. Then, if your version of Teams offers a test call in its device settings, use it to confirm your audio and video work end to end. The most reliable check is a short call with a colleague or friend: ask them whether your video is smooth while you move normally, and compare their video on your screen. A smooth preview confirms only local capture; it does not confirm how others will see you.

Limits that may affect what you can change

• Work or school accounts: your organisation can control Teams features, network routing and VPN requirements, and you may not be able to change these yourself.
• Web version: Teams in a browser works only in supported browsers, and some features available in the desktop app may differ or be missing.
• Older or low-power computers: background effects and many simultaneous video streams may not run smoothly no matter how settings are adjusted.

When to escalate

If video still lags after you have tested a wired or stronger connection, closed other apps, turned off effects, updated everything and tried another version of Teams, gather what you observed: whether the preview is smooth, which changes helped, and whether the problem appears in other video apps. On a managed device, take this to your IT administrator, who can review call quality data your organisation has access to. On a personal account, contact Microsoft support. If the camera lags in every app and on another computer, contact the camera's manufacturer, as the device itself may be faulty.