VPN

Is Your ISP Throttling Streaming? Force 4K Playback

By Dalto Cardoso • Published on July 22, 2026 • 1 min read

Streaming high-bitrate 4K video content requires unthrottled bandwidth from your internet provider. However, many broadband suppliers impose invisible speed caps on video streams during peak hours. In this guide, we audit how NordVPN and Surfshark prevent video packet inspection and unlock full 4K playback.

1. How Video Traffic Compression Works

When an ISP detects video streaming traffic, automated traffic shapers limit bandwidth down to 4 Mbps per stream. Encrypting your connection with NordVPN or Surfshark hides the stream protocol, forcing your router to deliver unthrottled bandwidth.

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Frequently Asked Questions

How do ISPs actually throttle 4K video streams?

Automated traffic shapers detect video streaming traffic and cap bandwidth down to around 4 Mbps per stream during peak hours.

How does encrypting my connection stop this kind of throttling?

Encrypting your traffic with a VPN hides the underlying stream protocol from your ISP's traffic shapers, which forces them to deliver unthrottled bandwidth since they can no longer identify it as video.

Sources & References

NordVPN — 4K Streaming Acceleration: https://nordvpn.com/
Surfshark — Unlimited Streaming Bandwidth: https://surfshark.com/

See our research methodology for how we combine our own testing with public data sources.

About the Author

Dalto Cardoso is the founder of DCSpeedTest, a digital nomad who has tested internet connections across multiple countries and runs his own VPS infrastructure for clients worldwide. He holds certifications from Google and Meta Blueprint.