I had that exact same issue. It didn't matter what channel I tried to watch, once the channel loaded to play video the video was 1/4 screen. It definitely seems to an issue with the HDMI connection; possibly not making good contact with all the pins. I actually discovered it by accident. Since there wasn't any color distortion, I hadn't considered the HDMI cable, but too make sure I had a solid connection, I removed and reconnected the HDMI cable on the TV a few times and that fixed ALL the issues I was having. It did happen again a few days later and I unplug and reconnected the HDMI from the TV and it fixed it again. That was back in February of 2020 and I have not had that issue happen again.
