Conversation delay
When latency rises, people talk over each other and screen sharing can feel delayed.
zoom network test
Zoom network test
Video meetings need more than raw speed. This independent test checks whether latency / ping stays stable when the connection is busy, which is one reason meetings can lag even on a fast-looking line.
independent browser test
Measure the network behavior that affects video meetings.
Bufferbloat.org is not affiliated with Zoom. It measures quiet ping, loaded ping, throughput, and latency variation so you can see whether the line stays usable during meeting-like conditions.
Your outbound video
Video meetings depend on upload too. A busy upstream path can make the whole connection feel laggy.
Other traffic matters
A meeting may work alone but degrade when someone else starts a download, backup, or stream.
Why this is not a vendor status check
This page does not test Zoom servers or diagnose a Zoom account. It tests your local connection behavior under load.
That is useful because many meeting problems come from latency and queueing on the access connection, router, Wi-Fi, or upstream path.
How to interpret the score
A good result means ping stayed close to normal while download and upload traffic were active. A poor result suggests bufferbloat or unstable local network behavior.
Repeat the test with VPN disabled and other activity paused if the result is unexpectedly bad.
Continue reading
These related pages explain the measurement terms and the open-source methodology behind the test.