Roku Support
posted this on July 19, 2011 15:19
In general, the faster your Internet connection, the better the video quality. For the best viewing results, we recommend a minimum of 1.5 Mbps for standard definition and 3.0 Mbps for HD content. To test your network speed, visit either one of the following (free) websites:
Please note that your Internet speed may vary throughout the day.