For a couple months I've been experiencing pixelating on four New York HD channels, each of which is a duplicate of a Philly channel. It happens on all three set top boxes.
Other channels are fine, including the same Philly ones (NBC, Fox, and so on). So this is not much of a problem (unless one likes New York local news), but it makes me wonder if FIOS is throttling NY channels when Philly ones also are available.
I went through a tedious chat experience with a tech who reset all the boxes and nothing changed.