Hello, I’ve been having some issues at one of my latest installs, and I can’t seem to figure out the issue. We’ve installed a 7.1 surround using an Integra DRX 3.2, an Epson 6040, 4K Apple TV and xfinity x1 cable box. The issues that we are having, is they while on Xfinity the picture seems to glitch along with the audio from time to time. The issues are only happening with Xfinity and not Apple TV. We are using a 4K fiber hdmi cable, but we have replaced it with a 4K HDMI Balun and having same issues. We have replaced the cable box, the 6ft hdmi cable from the cable box to the receiver, and even switched inputs on the AV receiver from cbl/sat to BD/dvd and still having issues. Does anyone know what can be causing this? Thanks