Ppsspp Psp Emulator

Hi my first post ! I have a KD 49 XG 9005 android tv. We have the Premium Netflix plan and have settings to " high " so that 4K etc will be broadcast. TV is connected via ethernet cable and we have download speeds of approx 40 MBs. If we choose to watch a Dolby Vision film, and I go to Picture Display it shows that HDR is being broadcast. If on the other hand we select a 4k Ultra HD film, and I go to Display settings there is no HDR displayed. The picture quality is most definitely not in 4K. I have updated the TV firmware but still no luck. Any advice / help would be very much appreciated, thanks Derek.