I'm in the UK and i have had multi 360's and never had and probs.
I just bought two Xbox ONE's for me and one for my boys(upstairs)
There's seems to work without any probs @ all, but mine every few minutes my screen seems to blink black the goes back to normal and keeps doing this over and over withing games and on the main ONE screen menus.
I tried ever combination of settings and nothing works.
I have tried 3 other HDMI leads and all into 3 diff HDMI ports on my TV and even a HDMI splitter box and still nothing works.
I has a small 22" HD TV spare so plugged that into my ONE and no blinking!!
I took my ONE upstairs to my kids TV and NO blinking!! I then tried my kids ONE on my TV and it blinks?
There TV is a 3mnth old 40" Toshiba and no probs.
Mine is a 4yrs old Sony KDL 37S 5500 and works with Blu Rays.. Sky boxes.. 360s.. with any probs just on the ONE
Any know why or how to resolve without buying a new TV.