It's not as if you are losing much here. CNET has written many times about 4K UHD. The model you noted is 4K UHD and not 4K. There is such a thing as 4K so when getting technical, try to use the terms otherwise they may tell you no to the 4K question when it was a matter of UHD and support by Sam and Netflix.
Hi.. When I play programs off the netflix 4k menu it shows 1080p in info (and does not look like UHD to the eyes. I have a NETGEAR 3700 modem/router. I have Netflix set to highest quality. My COX speed test (on my laptop -- the native Samsung browser will not open the page) shows over 40mbps download. Also, I have the Samsung movie pack, which does show UHD movies, so I know the TV is capable. Any thoughts?