Are you watching with the screen that shows all TP's? It doesn't refresh.
The signal meter screen shows both tuners for a single TP, and it is constantly refreshing in realtime.
Difference between two tuners could be the resistance in the cable, different length cables or a loose connector. Could also be one tuner isn't peaked correctly inside the box.
H20 with last weekends CE is refreshing the screen once a minute.
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