Why is my webcam laggy or choppy?

A choppy webcam is usually low light, USB bandwidth or the call connection rather than a failing camera. Measuring the local frame rate tells you which.

By Hardware Detective editorial team · Last updated September 29, 2026 · How we test

A webcam that stutters, freezes for a moment or looks like a slideshow has three likely causes: the camera is producing fewer frames, the connection to the computer can’t carry them or the call is dropping them on the way to the other person. They look the same to you. The first job is finding out which it is.

Step 1: measure without a call

Open the webcam test and allow the camera. Look at the frame rate it reports. That number is counted from the frames that actually arrive in the browser on your own computer. No video leaves your device, so the internet plays no part.

• Around 30fps and the picture looks smooth: your camera is fine. The choppiness you see in calls is the call. Skip to step 4.
• Well below 30fps, often around 15: the camera is slowing down. Work through steps 2 and 3.
• The number keeps jumping around: usually light or bandwidth. Steps 2 and 3 again.

Most webcams run at 30 frames per second. Some offer 60 at lower resolutions. Anything steady at 24 or above looks smooth for a video call.

Step 2: add light

This is the most common cause by a long way and it’s free to fix.

In dim light a camera needs more time to collect light for each frame. Most webcams handle this by lengthening the exposure. A frame that needs a fifteenth of a second of exposure can’t be delivered thirty times a second, so the frame rate drops to fifteen. The camera does this automatically and often without telling you.

Turn on a lamp in front of you so it faces you rather than sitting behind you. Watch the frame rate in the webcam test. If it jumps back up, you’ve found it.

Some camera software has a low light boost feature that deliberately trades frame rate for brightness. If your camera app has a setting with a name like low light compensation, try turning it off with good lighting in the room.

Step 3: check the USB connection

Uncompressed 1080p video at 30fps needs more bandwidth than USB 2.0 can carry. Webcams get around this by compressing the video inside the camera. Even so, a webcam uses a large share of a USB 2.0 connection.

Things that squeeze it:

• A USB hub or dock shared with other devices, especially another camera, a capture card or an audio interface
• A front panel port on a desktop PC connected through a long internal cable
• A long or cheap extension cable

Plug the camera straight into a port on the computer itself and measure again. If the frame rate improves, the hub or cable was the bottleneck.

If the webcam test also reports a lower resolution than you expected, that’s the same problem showing up another way. The blurry webcam guide covers resolution in more detail.

Step 4: when the camera is fine but calls are choppy

If the local frame rate is steady, the camera is doing its job. Choppy video in a call comes from what happens after the camera.

Your upload speed. Video calls need a steady upload connection. On a busy home network or weak Wi-Fi the meeting service lowers your frame rate to keep audio flowing. Try a wired connection or move closer to the router.

The other person’s connection. If one person looks choppy and everyone else is fine, the problem is probably on their end.

Your computer’s load. Background blur and virtual backgrounds process every frame. On an older laptop turning them off can make a clear difference.

Another app holding the camera. Some systems let a second app open the camera at a lower setting while the first still has it. If a video tool you forgot about is running, the call may get a reduced stream. The camera in use guide explains how to find it.

Laptop specific causes

Laptops often lower performance on battery to save power, which can affect video processing in calls. Plug in the charger and set the power mode to balanced or best performance before an important call.

Built-in laptop cameras are also more sensitive to low light than most external webcams, so step 2 matters even more.

Before an important call

Open the webcam test a few minutes before you join, in the lighting you’ll actually use. If it reports a steady frame rate you know the camera side is fine. The pre-meeting check runs through your microphone and speakers the same way.

If the picture is upside down or other people say your text reads backwards, the flipped webcam guide covers it.