Why does my streaming keep buffering?

The short answer

Video buffers when your connection can't keep a steady flow of data coming fast enough for the quality you're watching. The usual causes are weak Wi-Fi to the TV or streaming device, other people using the connection at the same time, lost data, or your provider's network being busy in the evening. Testing on the streaming device itself shows which.

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How much speed does streaming need?

Roughly, per stream:

HD (1080p): about 5–8 Mbps
4K: about 15–25 Mbps

The exact numbers vary by service. What matters is that this speed is steady: a connection that averages 50 Mbps but keeps dipping can still buffer.

Common causes

Weak Wi-Fi to the TV

TVs and streaming sticks often sit behind the TV, inside a cabinet, or far from the router, which are all bad places for Wi-Fi. Their built-in Wi-Fi is often modest too.

Others using the connection

Several streams, a game download and a cloud backup at once can fill a modest plan, especially in the evening.

Lost data

Lost data forces resends and drops in speed, which can trigger buffering even when average speed looks fine. It usually comes from Wi-Fi interference.

Your provider at peak time

If buffering mostly happens in the evening on every device, your provider's network may be congested. See why Internet slows down at night.

The streaming service

If only one service buffers and others are fine, the problem may be on their end, or on the route between your provider and them.

Find the cause

Run our test on the streaming device if it has a browser, or on a phone held next to it. That shows what the TV's spot actually gets.
Test again next to the router. A big difference means Wi-Fi coverage is the issue.
Test in the evening if that's when it buffers.

Fixes, easiest first

Restart the streaming device and the router.
Use Ethernet for the TV or streaming box. Most have a port, and it's the most reliable fix.
Move the streaming stick out from behind the TV (an HDMI extender cable helps) or move the router closer.
Connect the TV to the 5 GHz network if it's close to the router.
Pause heavy downloads while watching.
Lower the streaming quality setting if your connection is genuinely slow.
Add coverage near the TV: a mesh Wi-Fi point or powerline adapter.
Contact your provider if a wired device still can't sustain your plan's speed in the evening.

Questions people ask

Why does Netflix buffer but YouTube doesn't?

Different services use different servers and routes. If one buffers and others don't, the problem is likely between your provider and that service, not your Wi-Fi.

Is my TV's Wi-Fi the problem?

Often. TVs tend to have modest Wi-Fi and sit in poor spots. Testing next to the TV, then next to the router, shows whether the TV's location gets enough speed.

Will a faster plan stop buffering?

Only if your connection is genuinely full. If the cause is Wi-Fi to the TV or lost data, a faster plan won't help, and Ethernet or better coverage will.

Last updated October 17, 2026.