Hello, I have a Roku Express. The other day, I noticed a brief flicker of interference on my picture quality. I tried a different HDMI input, a different TV. I figured maybe it was the HDMI cable. Installed new cable today and issue was worse. Flickering at the home screen. I unplugged the unit and plugged it back in to force a reset and that corrected the issue. I watched about 2 hours of TV and then switched inputs to work on my Xbox. When I switched back to the Roku, the issue was back, when I reset the unit again, it cleans up the issue. Any thoughts?