Something that's just helped improve my image quality is using a display port adaptor like this one https://www.amazon.co.uk/gp/product/B013G4EXMM/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 which was recommended in this thread https://forums.frontier.co.uk/showthread.php/278996-Rift-hdmi-port-users. For myself and a few others it has made a noticeable difference to the image quality and has reduced the god rays a bit too.
Indeed, saw that; mine is being delivered in the morning