4 min read · Checked October 2026
Streaming without buffering
Speeds per stream
| Service | HD | 4K |
|---|---|---|
| Netflix | 3 Mbps (720p), 5 Mbps (1080p) | 15 Mbps |
| YouTube | 2.5 Mbps (720p), 5 Mbps (1080p) | 20 Mbps |
Add them up for streams playing at the same time. Two Full HD Netflix streams need about 10 Mbps.
Why it buffers
Buffering usually means Wi-Fi trouble inside the home, a busy network at peak times, or a quality setting higher than your connection can keep up with. Most apps adjust quality automatically.
Fixes that work
Key takeaways
- Full HD needs about 5 Mbps per stream. 4K needs 15 to 20.
- Most buffering starts at the router, not the plan.
- HD looks great on most screens and uses less than half the data of 4K.
Quick check
Netflix recommends for 4K:
A common cause of buffering is:
Words in this lesson
Sources
Checked October 2026.
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