I have a HDHomeRun Flex Quatro 4xDVB-T/T2/C Tuners - HDFX-4DT and two TV's. One TV is a Samsung and I have an Apple TV attached to it which has the HDHomeRun app on it. On this TV HDHomeRun performs faultlessly.

I recently purchased a Amazon Fire TV 55-inch Omni QLED series 4K and have installed ...