Amazon was OK too as I tried the grand tour. Currently watching s5 of the walking dead and it looks horrendousNot sure which Dx model you have but Netflix will definitely work for HDR you should see the brightness go to 100 in the settings, Amazon is having issues on the Tv's currently as they have updated to HDR10+ but the Tv's have not, and BBc Iplayer on the 2016 range wont do HLG via the APP on through HMDI, this is taken from a response i received from Panasonic.