I have been tearing my hair out trying to find an antenna that will work with the Roamio. Finally, I've just given up and attached the antenna I have directly to my LG TV and just like that all of the picture quality problems I had been experiencing with the Roamio are gone! The only thing I can determine is that the Roamio tuners suck compared to the LG tuner. The devices are mere inches from each other, so it can't be positioning. Unfortunately, it means I can't DVR or pause any OTA TV, which is the entire reason I have the Roamio. Has anyone solved this problem?