I am using an RX560 4GB and a Samsung 4K monitor with the latest drivers and everything seems to work with DisplayPort (1.2). When using HDMI (2.0) the display/monitor goes off and on randomly for 1-2 seconds (or sometimes turns to green/shows static). I am using 3840x2160 at 60Hz. The problem seems to be related with the one described in the following link: https://community.amd.com/thread/205187 The problem does not happen when using 3840x2160 at 30Hz. I can live without HDMI, but I am wondering if this a driver or a display hardware problem. Also, if I should rule out the monitor completely. Can anyone help?