Poor Video Call Quality: Why People Can't Hear You, the Picture Breaks into Blocks and Calls Drop — Even Though the Speed Test Says Your Internet Is Fast

A meeting with colleagues, a job interview, a lesson with a tutor, a chat with relatives abroad — video calls are an ordinary part of life, especially in Tbilisi, where many people work remotely for foreign companies. And almost everyone knows the scenes: "we can't hear you", "your picture's frozen", a voice that turns robotic, and a call that drops at the worst moment. Meanwhile the speed test shows 100 Mbit/s or more, and the person can't understand what's wrong. The thing is, video calls depend less on top speed than on a stable connection, upload speed and the state of the computer itself. Let's go through it step by step.

What a video call actually needs

A good-quality video call needs only a few megabits per second in each direction — far less than modern plans provide. But the call happens in real time, and three things are critical: stable upload speed (your video goes out to the others), low and even latency, and no packet loss. If the connection becomes congested or the Wi-Fi "hiccups" for even a fraction of a second, the app lowers the quality, the picture breaks into blocks and the sound cuts out. An ordinary speed test doesn't show this: it measures a maximum over a few seconds, not stability over an hour.

Common causes

• Weak or congested Wi-Fi. The computer is far from the router, behind several walls, or the 2.4 GHz band is crowded with neighbours' networks. Wi-Fi has brief dips that go unnoticed on websites but are felt immediately in a call.
• Low upload speed. Some plans, and especially mobile internet, have upload several times lower than download.
• Someone else is using the connection. Cloud photo sync from a phone, a backup upload, updates, high-quality streaming on the TV, torrents. Latency in the call rises as a result — this is called bufferbloat.
• VPN. A corporate or personal VPN routes traffic through a remote server, adding latency and sometimes limiting speed.
• The computer can't keep up. An old or overheating laptop, a weak processor, background blur and dozens of browser tabs — video starts stuttering even if the internet is fine.
• Problems at the provider — packet loss on the line, especially in the evening.

Sound: echo, noise and "we can't hear you"

Many problems blamed on the internet are actually about sound. A laptop's built-in microphone picks up the fan and keyboard, and the speakers create an echo the others hear as their own voice. Sometimes the app picks the wrong microphone — for example, one in a connected monitor or a webcam on the other side of the room. A decent headset or earphones with a mic solve most of these problems and make speech clearer.

The picture

Laptops' built-in webcams often give a dark, noisy picture, especially in the evening and against a window. In these conditions the app compresses the video harder, so the image looks worse than it could. An external webcam and some simple light from the front improve the picture more than a more expensive plan would.

How to get stable video calls

• Connect the work computer to the router by cable — the single most effective step.
• If cable isn't possible — an access point or mesh node near the desk, and the 5 GHz band.
• Turn on priority for video calls and smart queue management on the router.
• Pause background uploads and sync during important calls.
• Check the laptop for overheating and dust, and update the camera, audio and network drivers.
• For remote workers — a backup mobile line in case the provider fails.

What our technician does

1. Tests the connection not just for speed but for latency, its variation and packet loss over time.
2. Measures Wi-Fi at the desk and, if needed, runs a cable or installs an access point.
3. Configures the router: priorities, queue management, Wi-Fi bands and channels.
4. Checks the computer: load, overheating, drivers, sound and camera settings, and VPN.
5. Recommends a headset and webcam and makes a test call.

A real example

A programmer working for a European company, living in Mukhiani, complained that colleagues constantly asked him to repeat himself on daily calls, and twice a week the call dropped completely. The speed test showed 300 Mbit/s. Our technician ran a long measurement: the Wi-Fi in his room, two walls from the router, had regular dips, and in the evening his wife uploaded photos to the cloud, sending latency up dozens of times. We ran a cable to his desk, enabled queue management and video call priority on the router, and recommended a headset instead of the built-in mic. The dropouts stopped, and colleagues said they could hear him much better.

It's also worth thinking about the workspace as a whole. If you're on video calls regularly, it makes sense to set it up properly once: a stable wired connection, a decent headset, an external camera at eye level, light from the front, and notifications and sync paused during calls. This takes an hour but saves you from daily small problems and makes you more confident in important meetings and interviews.

Call a technician

If your video calls cut out, freeze or people can't hear you well, we'll come to any district of Tbilisi around the clock and find the cause. Learn more on our internet problems, Wi-Fi setup and computer setup pages.