Video Lag
Ryze Tello Drone
Severity: ModerateWhat Does This Error Mean?
Tello video lag is caused by Wi-Fi congestion or distance between the Tello and your phone. The Tello transmits video over 2.4 GHz Wi-Fi — too much interference or distance causes lag. Fly in an area with less Wi-Fi congestion and keep the Tello within 20 metres for best video.
Affected Models
- Ryze Tello
- Ryze Tello EDU
Common Causes
- Too many Wi-Fi networks on 2.4 GHz causing channel congestion
- Phone and Tello too far apart
- Phone CPU overloaded — too many background apps
- Phone screen recorder or screen mirror running simultaneously
- Low Tello battery causing reduced transmission power
How to Fix It
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Fly in an area with fewer Wi-Fi networks.
Indoors near a router, or outdoors in a city, the 2.4 GHz band is crowded. Moving to a park or open area away from buildings significantly reduces Wi-Fi interference.
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Keep the Tello within 15-20 metres for smooth video.
The Tello's video transmission degrades sharply beyond 20 metres indoors. For recording video, fly close. The 100 m flight range is for control only — video range is much shorter.
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Close all background apps on your phone before flying.
The Tello app streams video directly to your phone. Background apps consuming CPU or Wi-Fi bandwidth cause stutters. Force-close everything except the Tello app.
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Lower the video resolution in the Tello app.
Tello app Settings → Resolution. Drop from 720p to 480p if lag is severe. This reduces bandwidth demand and eliminates lag on congested channels.
Frequently Asked Questions
What is the actual video range of the Ryze Tello?
In real-world conditions, the Tello delivers smooth video within 10-20 metres. The advertised 100 m range is for control signal only. Video quality degrades significantly beyond 30 metres.
Does the Tello EDU have better video than the standard Tello?
No. Both models use the same 720p camera and 2.4 GHz Wi-Fi video transmission. The EDU version adds programmable hardware ports — the video system is identical.