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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteIf coworkers struggle to hear or see you, a weak or unstable upload connection may be part of the problem: your device sends your camera and microphone data outward during a call. A fast download result alone does not show whether that outgoing connection is working well. But low upload is only one possible cause, so check the connection and the call setup before changing your internet plan or buying equipment.
Why upload speed affects what coworkers see and hear
Upload speed is the rate at which your connection sends data from your device to the internet. In a work call, that includes the audio and video you send to the meeting service and other participants. When outbound capacity is too low for the call—or varies sharply—your outgoing video may lose quality, and audio or video may lag or drop.
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Upload and download are separate measures. Download speed describes what your device receives, such as other participants’ video. A high download result does not prove that your outgoing camera feed has enough capacity.
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Speed is not the only factor. Wi-Fi congestion, latency, packet loss, other household traffic, VPN routing, device limits, and another participant’s connection can cause similar symptoms. Google Meet Help identifies bandwidth issues as a major cause of poor video quality, but a symptom by itself does not identify the cause: Google Meet troubleshooting guidance.
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How much upload speed a video call may need
There is no single upload-speed threshold that guarantees good calls. Requirements depend on the meeting platform, whether the call is one-to-one or a group, and the video quality in use. Use platform figures as scenario-specific guidance, not as a universal standard.
| Call scenario | Platform guidance | How to interpret it |
|---|---|---|
| Zoom, high-quality one-to-one video | 600 kbps upload and 600 kbps download | Zoom’s recommendation for this call type and quality, not a general minimum for every service. Zoom bandwidth requirements |
| Zoom, 720p one-to-one video | 1.2 Mbps upload and 1.2 Mbps download | Zoom’s recommendation for a 720p one-to-one call. Zoom bandwidth requirements |
| Zoom, 1080p one-to-one video | 3.8 Mbps upload and 3.0 Mbps download | Zoom’s recommendation for a 1080p one-to-one call. Zoom bandwidth requirements |
| Zoom, 720p group video | 2.6 Mbps upload and 1.8 Mbps download | Zoom’s recommendation for 720p group video. Zoom bandwidth requirements |
| Zoom, 1080p group video | 3.8 Mbps upload and 3.0 Mbps download | Zoom’s recommendation for 1080p group video. Zoom bandwidth requirements |
| Google large remote event when the connection seems slow | At least 3.2 Mbps upload and 3.2 Mbps download | Google Workspace Learning Center’s rule of thumb for this event-hosting context, not a general Meet requirement. Google Workspace event-hosting advice |
These are vendor recommendations on current support pages accessed in 2026. They are not guarantees: apps may adapt call quality to network conditions, and actual results also depend on stability, equipment, settings, and other traffic.
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Check whether upload is actually the problem
- Describe the symptom. Note whether other people have trouble hearing or seeing you, whether incoming video is affected too, and whether the issue occurs at particular times or locations.
- Measure during a bad call period. Run an internet speed test and record both upload and download. Repeat it to see whether the results are consistent, then compare them with your ISP plan and the guidance for your platform and call type. A speed test taken when the problem is absent may not reflect call-time conditions.
- Compare with call health when available. Microsoft Teams exposes measures such as round-trip time and packet loss. Teams lists under 200 ms round-trip time and under 2% packet loss as typical reference values; these are Teams call-health values, not universal standards. Teams also reports a send-limit metric. Microsoft notes, “This isn’t your ISP speed limit”—the metric describes the app’s send limit, not the maximum speed in your internet plan. See Microsoft Teams call-health guidance.
A low or inconsistent upload result during the trouble period supports investigating outbound capacity. If upload looks adequate, or the speed test is stable but calls still break up, look at Wi-Fi, latency, packet loss, competing traffic, the device, and the other participants rather than assuming the ISP speed is the cause.
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Compare Wi-Fi with Ethernet
If you can, connect the computer to the router with Ethernet and compare call quality under similar conditions. If the wired call improves, the ISP connection may be adequate while the Wi-Fi link is the weak point. Use an existing or borrowed cable for the comparison before considering a purchase; a cable cannot raise an upload cap set by your ISP.
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Wi-Fi band and placement can matter. Microsoft describes 2.4 GHz as having longer range but often more congestion, while 5 GHz is faster and less congested but has shorter range and passes through obstacles less effectively. Distance, walls, and nearby network activity can all affect results. See Microsoft’s guidance on improving a Teams connection.
Pause competing internet use
During a test call, pause large uploads and downloads, streaming, and other bandwidth-heavy household activity. Close nonessential apps and browser tabs that may be transferring data. Google advises limiting other internet activity during a video conference; this is especially useful as a diagnostic step because it shows whether shared use is crowding out the call. See Google Meet troubleshooting guidance and Google Workspace event-hosting advice.
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Check the VPN, computer, and call setup
If your workplace permits it, compare a call with and without the VPN to see whether routing is affecting latency. Do not bypass a required work VPN or security policy. Also check that the intended camera and microphone are selected, close CPU-intensive apps, and confirm whether other participants have the same problem. Microsoft notes that both people on a call need enough bandwidth for high-quality video, so a problem on the other participant’s side can look like yours. See Microsoft’s connection and speed-test guidance.
When to contact your ISP or consider equipment
Compare repeated speed-test results with the upload speed in your internet plan. If wired tests remain substantially below the plan’s stated service during the times calls fail, contact your ISP with the test results and times. If the wired connection performs well but Wi-Fi does not, focus first on router placement, signal, and congestion.
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- Update router firmware and your computer’s network-adapter drivers.
- Consider a router or network-adapter change only when wired-versus-Wi-Fi comparisons or other local-network evidence point to that hardware.
- Do not expect new Wi-Fi equipment to fix an ISP upload limit or a problem caused by a VPN, device, or remote participant.
Microsoft’s troubleshooting guidance includes checking the ISP connection and updating network hardware software: improve your internet connection for Teams calls.
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