Hi,
I tried everything with the above setup, new firmware, various cables including this one https://www.amazon.co.uk/gp/product/B00OLBBI6E/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 but still the only thing i get at 60hz 4:4:4 is a random colored screen and some flickering at the bottom. Is this only working for AMD?