yesterday AT&T for Internet and DirecTV for TV was installed. I still have comcast for few more weeks before i disconnect. So i have samsung (SUHD 65inch UN65JS8500) TV. I have been with comcast for 15 years and moved to DirecTV/ATT yesterday (1/31/2018). I have both the receivers connected to my TV. My Comcast picture quality is extraordinary when compared to DirecTV. DirecTV installed HR54 receiver. My TV INFO shows as 720P for DirecTV and Comcast shows up as 1080P. But i see a major difference in the picture quality. The technician called and tried several settings but no luck. changed the TV resolution to use only 1080i but it still shows up as 720P. Anyone know how to fix it or similar experience?