Welcome to the Community, I'm really sorry to learn about the problems you're experiencing with your TV service lately, it's really not what we want.
Have you had any luck in taking a look at Browser01's suggestion? I'd love to hear if there are any hiccups registered.
I'd also like to run some tests on the set top box from our end but I've not been able to locate your account using your forum information unfortunately. So I can take a closer look could you respond to the private message I've sent with the requested information? You can view the message by clicking the purple envelope on the top right of this page.