The recent update added the 50hz option for correct viewing of UK TV services. Problem is that using it looks like total garbage due to an awful up-down "jiggle" that affects both the signal and the xbox menus (in the TV app only). I'm guessing the XBOX doesn't perform the HDMI handshake correctly.
Is there any way to fix this? A full power down of the XBOX has not helped.
Equipment: XBOX ONE connected via HDMI to Samsung LM40M86 series TV. TV source is UK Sky HD box.