Hi, I have just plugged my RX 580 into a samsung 40JU6000K UHD Tv just to see what it looks like and the screen looks great but appears to bulge in the middle and slope off towards the sides. It almost looks like a reverse curved screen. If you look down the side of the TV it all looks good and nothing hardware is broken but when you look staright at it it appears curved. I have tried numerous settings, different HDMI cables/ports but it still does it. Any ideas please?