First of all, we suggest you empty the cache of your browser.
If this doesn’t help, check your internet connection at http://www.speedtest.net/. We recommend a downstream bandwidth of at least 1.7 Mbps for a smooth playback experience. If your video download speed is low or inconsistent, pause the video until the buffer is full and then try playing the video again.
If you are running any bandwidth-intensive applications on your computer, or any other device on your network such as Skype, Vonage, Magic Jack and online gaming, you may want to pause these applications while watching videos on Viewster.