I'm in Minneapolis and will wait to swap my x1 1080p box for an x1 4k box when they're available in a local Comcast store. I have a 2016 Samsung SmartTV as well as the latest gen. AppleTV, both with 4k, so I'm not concerned with watching 4k content per se. The issue I'm having with the x1 box and my Samsung TV is that if I connect the HDMI out from the x1 to my Marantz SR7010 (4k) then out to the TV (all high-capacity HDMI I bought from Magnolia), cable TV will disconnect every 20 minutes or so. There's no problem with anything streamed from the SmartTV or Apple TV, or from my UHD 4k Blu-ray player, all of which connect throuth the Marantz receiver. This behavior is only with cable. My workaround is an HDMI splitter that allows me to bypass the Marantz from the x1 to the TV. My sense is there is an issue with thw handshake between the x1 and the TV if I go through the Marantz, which would get resolved if the x1 were 4k. The goal is to get of the HDMI switch.
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