ESPN HD

One specific HD channel has severe pixelation/large tiling on every Xfinity cable box in my home. All other channels are normal. The same channel works perfectly through the Xfinity Stream app. A system restart has already been performed and did not resolve the problem. Please escalate this for investigation of the RF/QAM channel, signal-to-noise ratio, ingress and uncorrectable errors affecting that channel/frequency. This appears to be a cable/RF issue rather than a TV or individual box issue.