Your camera and audio
Meetings depend on outbound traffic. Upload congestion can delay audio, video, and screen sharing.
zoom internet test
Zoom internet test
If video meetings lag while ordinary speed tests look fine, the missing signal is often latency under load. Bufferbloat.org independently measures whether your internet connection stays responsive during download and upload pressure.
meeting-quality signal
Test the connection behavior that ordinary speed tests miss.
This is not a Zoom service test and Bufferbloat.org is not affiliated with Zoom. It measures the local connection conditions that affect video meetings in real use.
Other participants
Download load can also add delay if queueing builds while receiving data.
Responsiveness
Stable ping under load is a better meeting-quality signal than throughput alone.
Why speed tests can miss meeting problems
A speed test can report good megabits per second while queues add delay to small interactive packets.
Video meetings care about timely delivery, not just total capacity.
How to run a cleaner test
Keep the tab in the foreground, disable VPN if possible, and pause other heavy activity during the run.
If the result looks borderline, test again at another time of day because network performance can vary.
Continue reading
These related pages explain the measurement terms and the open-source methodology behind the test.