We’re not sure either which is why we’d like to take a closer look at your Tablo. The DUAL LITE is one of the few devices that should be able to handle 2 live TV streams w/o the need for a hard drive connected.
Can you send our support team a note referencing this thread? www.tablotv.com/ask-tablo
We can take a closer look at your Tablo and see what’s happening.