I am trying to set up a video wall with 2x2 LG 47" flat screens, each with 2K resolution, in order to have one 4K display distributed on all four screens. I am using the AMD Radeon RX570 graphics adapter with support for up to 5 screens. All screens are connected properly (one with native HDMI the other three with Display port-HDMI adapters). All screens are working properly and shows parts of the windows image. Eyefinity is activated, but for some reason I may only arrange the screens as four screens side by side, but not as a 2x2 matrix. I am running Windows 10 and the standard dialog for screen rearrangement does not allow me to move the screen symbols to a 2x2 matrix, ¨neither the interface of the graphic card settings (Eyefinity). What do I need to change?