If you’re experiencing poor video quality, there could be a few reasons:
Poor TV Antenna Reception
If the video has an occasional breakup, a few pixels at a time, or some brief buzzes in the audio, the problem is most likely HDTV reception. Run a new channel scan to see what the current signal strength is and try to re-orient your antenna for better reception. If the problem persists you may need to upgrade to a better (amplified) or outdoor HD antenna.
Poor Wi-Fi Network Connection
If the video is clean but stops and starts (stutters or buffers) the cause is most likely a poor Wi-Fi signal either from your router to your device (tablet, smartphone, Roku, Chromecast, Amazon Fire TV, Android TV etc.) or from the Tablo to your router if you are using Wi-Fi for the connection. Try moving to a different Wi-Fi channel, upgrade to a router that supports the 5Ghz bandwidth, try an Ethernet connection, or move the router closer to the Tablo or to where you are using your device.
Incompatible/Failing Hard Drive
If the video is clean but has large patches of breakup every few seconds, the problem is often the hard drive. Either the drive is too slow to record the video, it is disconnecting frequently and reconnecting, or is operating as a USB 1 drive. The easiest way to troubleshoot drive problems is to swap your original drive with a different drive and test your results to see if you can reproduce the same issue.