Recently purchased Ultimo 4K, running OpenViX 5.1.030 (2018-06-25), also tried 5.1.031 but same problem, display output is set to 2160p - 50hz, as you can see from the screen photo I am getting a strange pixelation. This develops after approx 45 mins of viewing the same source, if I select Menu and then exit back to the programme pixelation goes but comes back in 5 mins or so, if I change channel pixelation problem goes away but comes back in 5 or so mins. I have reflashed the box & same issue occurs. Tried different HDMI leads and problem is the same. My TV is a Samsung UE40MU6400 and any changes in the TV display settings make no difference to the problem, neither does moving the HDMI lead into different inputs.
Anyone have any ideas.........................Spevs............... .IMG_20180718_201934977.jpg