Internet, Networking, & Security Home Networking How to Troubleshoot Netflix Errors Netflix running too slow? Try these tips by Bradley Mitchell Writer An MIT graduate who brings years of technical experience to articles on SEO, computers, and wireless networking. our editorial process LinkedIn Bradley Mitchell Updated on February 24, 2020 mphillips/iStock Unreleased/Getty Images Plus Home Networking The Wireless Connection Routers & Firewalls Network Hubs ISP Broadband Ethernet Installing & Upgrading Wi-Fi & Wireless Tweet Share Email If you enjoy watching shows on Netflix, make your video watching experience as enjoyable as it can be by avoiding networking issues that slow down video streaming. The instructions in this article apply generally to the Netflix streaming service. Many kinds of network devices support Netflix, including personal computers, tablets, smartphones, Apple TV, Google Chromecast, Sony PlayStation, Microsoft Xbox One, various Roku boxes, some Nintendo devices, and some BluRay disc players. Check with the manufacturer of your device for additional tips on using Netflix. Check Your Network Speed If you have trouble running Netflix, your network speed could be the cause. Netflix requires a minimum connection speed of 0.5 Mbps (500 Kbps) to support video streaming, and recommends at least 1.5 Mbps to sustain reliable playback of low-resolution videos and higher speeds for streaming better quality video: At least 3 Mbps for standard definition (SD) qualityAt least 5 Mbps for high definition (HD) qualityAt least 25 Mbps for Ultra HD quality Network latency also affects the quality of Netflix video streams. If the service level from your internet service provider (ISP) doesn't consistently offer the performance needed to run Netflix, try some do-it-yourself fixes, or contact your provider and upgrade your service. Run a Speed Test Standard internet speed tests measure your network's overall performance, and additional tools monitor your Netflix connection: A test clip on the Netflix service called Example Short.23.976 displays the real-time video resolution and frame rate of your stream.The Netflix ISP Speed Index reports statistics on average customer streaming speeds, categorized by service provider, during prime-time viewing hours. Beware the Buffer Buffering video data on a network stream involves processing and sending individual video frames to the receiving device a few seconds ahead of when they need to be shown on screen. The device saves those data frames in its temporary storage (called a buffer) until it's time to display them. Netflix uses buffering to prevent video playback from stalling when a network connection can't stream data fast enough. Video buffering doesn't always prevent playback stalls. If the network connection is too slow for a long period, eventually the buffer empties out. One way to resolve this issue is to change the video quality settings to a lower resolution. This action lessens the amount of data the network processes, meaning it works better at the same speed. Another option is to schedule your video watching during off-peak hours when fewer people are accessing Netflix and your ISP.