How to Reduce Buffering on Netflix: 8 Quick Fixes
Stop Netflix buffering with these practical fixes. From checking your speed to optimizing your WiFi, get back to smooth streaming.
Why Does Netflix Buffer?
Buffering happens when Netflix cannot download video data fast enough to keep up with playback. The spinning circle appears while your device waits for the next chunk of video to arrive. The most common cause is insufficient bandwidth, but there are many other factors that can interrupt smooth streaming even on a fast connection.
The first thing to do is check your speed. Run a quick speed test to see if your connection meets Netflix's requirements. If your speed looks fine, work through the fixes below — the problem is likely somewhere else in the chain.
What Speed Does Netflix Actually Need?
| Quality Level | Required Speed |
|---|---|
| SD (480p) | 3 Mbps |
| HD (720p) | 5 Mbps |
| Full HD (1080p) | 10 Mbps |
| 4K Ultra HD | 25 Mbps |
| 4K with HDR | 25 Mbps |
These are per-stream requirements. Two people streaming 4K simultaneously need 50 Mbps total. If your speed test results exceed these thresholds and you still buffer, the problem is not raw bandwidth.
8 Fixes to Stop Netflix Buffering
1. Restart Your Router and Modem
The classic fix works more often than you would expect. Routers accumulate memory bloat, connection tables fill up, and firmware glitches cause slowdowns over time. A power cycle clears all of this.
How: Unplug your router and modem (if separate) for 30 seconds. Plug the modem back in first, wait for it to fully connect, then plug in the router. Wait 2-3 minutes for everything to stabilize before testing Netflix again.
2. Use a Wired Ethernet Connection
WiFi is convenient but introduces latency, interference, and bandwidth fluctuations. If your streaming device (smart TV, game console, laptop) is near your router, connecting via Ethernet cable provides a faster, more stable connection.
Why it helps: Wired connections eliminate WiFi congestion, interference from neighbors' networks, and signal degradation through walls. Many buffering issues disappear entirely when switching to Ethernet.
3. Close Other Apps and Devices Using Bandwidth
Your connection is shared across all devices. A game downloading updates, cloud backup running, or someone on a video call can consume enough bandwidth to starve Netflix of what it needs.
How to check: Look at your router's admin panel (usually 192.168.1.1) to see which devices are using the most bandwidth. Pause downloads, close unused browser tabs, and temporarily stop cloud sync services.
4. Lower Netflix Streaming Quality
If your connection cannot sustain 4K reliably, manually setting a lower quality eliminates buffering while you troubleshoot the root cause.
How: In Netflix, go to your profile icon → Account → Playback settings. Set data usage to "Medium" (SD) or "High" (HD) instead of "Auto." On mobile, check the App Settings for download quality options. This is a temporary fix — but it gets you watching immediately.
5. Clear the Netflix App Cache
Corrupted cache data can cause playback issues even when your connection is fine.
Smart TVs and streaming devices: Uninstall and reinstall the Netflix app. On most platforms, this is the only way to fully clear the cache.
Android: Settings → Apps → Netflix → Storage → Clear Cache.
iPhone/iPad: Delete the app and reinstall from the App Store.
Web browser: Clear your browser cache and cookies, then restart the browser.
6. Update the Netflix App
Outdated app versions can have streaming bugs that newer versions have fixed. Netflix regularly releases performance updates.
How: Check your device's app store for pending Netflix updates. On smart TVs, check the TV's app update section. On game consoles, the system usually auto-updates apps, but you can trigger a manual check.
7. Check If Your ISP Is Throttling Netflix
Some ISPs intentionally slow down streaming traffic during peak hours. If Netflix specifically buffers while other sites work fine, throttling may be the cause.
How to test: Run a regular speed test and compare the result to Netflix's own test at fast.com. If your general speed is much higher than fast.com shows, your ISP may be throttling Netflix traffic specifically. A VPN can bypass this by encrypting your traffic so your ISP cannot identify it as streaming.
For more details, see our guide on how to detect ISP throttling.
8. Change Your DNS Server
Your DNS server resolves Netflix's domain names to server IP addresses. A slow or overloaded DNS can add delay to the initial connection and server selection process.
How: Switch to a faster DNS provider:
- Cloudflare: 1.1.1.1 and 1.0.0.1
- Google: 8.8.8.8 and 8.8.4.4
Change this in your router settings to apply network-wide, or on individual devices in their network settings. This can also help Netflix connect to a faster CDN server in your region.
Is It Netflix's Problem or Yours?
Sometimes buffering is on Netflix's end — their servers can get overloaded during major show releases or outages. Here is how to tell:
- Your problem: Other streaming services (YouTube, Disney+) also buffer. Speed test shows low results. Affecting all devices.
- Netflix's problem: Only Netflix buffers. Other services work fine. Speed test shows normal results. Check Downdetector for reported Netflix outages.
- Your device's problem: Netflix works fine on other devices in your home but buffers on one specific device. Update or reinstall the app on that device.
Prevent Future Buffering
Once you have fixed the immediate issue, prevent it from recurring:
- Use Ethernet for your primary streaming device
- Upgrade your router if it is more than 4-5 years old
- Schedule large downloads for off-hours
- Consider a plan upgrade if you regularly have multiple 4K streams
- Place your router centrally if WiFi is your only option
Start with a speed test to establish your baseline, then work through the fixes in order. Most buffering issues resolve within the first three steps.