Fire Stick running slow and buffering constantly
Your WiFi connection is either too slow or getting interrupted. Check your internet speed at speedtest.net. It needs at least 15 Mbps for smooth 4K streaming. If the Fire Stick is on WiFi, plug it into the router with a network cable and the buffering will stop almost immediately.
Video streaming uses a lot of internet speed. When your WiFi is slow or unstable, the video can't download fast enough, so it pauses to wait. That's buffering. Checking your internet speed tells you if that's the problem. Switching from WiFi to a network cable fixes buffering straight away because cables are faster and more stable than WiFi.
Fix-IT-Bot will walk you through each step — just tap, no typing needed.
Skip — I just want a technicianCommon mistakes to avoid
- Checking download speed instead of upload speed. Actually, for streaming only download speed matters, upload doesn't
- Leaving WiFi on even after plugging in a network cable. The Fire Stick can still try to use WiFi
- Not restarting the Fire Stick fully. Just unplugging for a few seconds isn't enough, wait at least 30 seconds
Signs you need professional help
- Internet speed is 25 Mbps or higher, you're on a network cable, and buffering still happens constantly
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