Hi guys!! Just finished setting up my new Mutant HD51 and I have to say I am really pleased with it. However, I have a problem with the video setting relating Resolution. I am trying to set it up at 2160 but the picture disappears in my 4k Sony XE9005 and then I have to revert the setting to 1080 following the front display in the Mutant.

I have an HDMI cable from the Mutant to my NON 4k Onkyo AV receiver and I wonder if that's why this is happening. I have the satellite receiver and a PS4 connected to the Onkyo and then one HDMI to the ARC HDMI input in the TV.

Any ideas on what's happening and what setting I should use in the video resolution set up?

Thank you

Sent from my Redmi Note 3 using Tapatalk