UHD Flickering apps sky Q

[1Anonymous1]

I've been experiencing a flickering issue when using apps on my Sky Q box when the sky Q resolution is set to UHD. The flickering occurs across all apps, but when I switch the resolution to HD, everything works fine. This issue has only started  recently, as UHD playback used to work without problems. And it should work when set to UHD problem is only with the apps  on sky Q iv tried rebooting the sky box and updating and app refresh but not worked any one know how to fix it what else I could try thank you