I've been using DVI on gfx card (R9 280x) to HDMI on tv and the picture has been perfect but the screw pins on the cable seem to be too short so it won't screw into the card which means our dog keeps knocking the cable out. I've just tried the HDMI to HDMI instead using our old sky HDMI cable and the picture is appalling. I don't believe it's TV related as I'm using the same HDMI port that the other cable was plugged in to. Other than buying a new DVI to HDMI cable and hoping the screws are longer is there any way of fixing the image quality over HDMI to HDMI? I've tried resetting the default CCC settings and fiddling with everything I can find. I usually run at 1920x1080 @ 60