The picture quality on many channels here in Massachusetts has been atrocious! One of the affected channels is NESN HD (Ch. 576). Tonight's Red Sox game is unwatchable, there are horizontal artifacts showing up on my TV screen every 5 seconds, and sometimes the channel "skips", similar to watching an OTA channel with a weak signal! Unfortunately, because I selected a plan with a 2-year agreement just 2 months ago, switching to a different provider is not an option unless I'm willing to pony up a $220 early termination fee.
Anyways, here is a list of the affected channels in my area:
551 TNT HD
553 FX HD
576 NESN HD
577 CSNNE HD
583 FS1 HD
616 One America News HD
617 Fox Business HD
618 Fox News HD
620 Discovery HD
621 Nat. Geo HD
622 Science Channel HD
623 Investigation Discovery HD
629 FYI HD
630 Animal Planet HD
639 TLC HD
640 Lifetime HD
641 Lifetime Movie Network HD
650 QVC HD
657 Evine HD
658 WOW HD
683 truTV HD
697 Viceland HD
699 Freeform HD
731 AMC HD
734 IFC HD
746 HDNet Movies
770 BET HD
783 Discovery Family HD
793 Daystar HD