I've got a LG OLED B8 4k TV that I have connect to my second PC. I don't do much gaming on it but when I do I can't seem to get higher than 30hz refresh. Windows or games won't let me choose higher, even when set to 1080p. I could get 60hz on my old 1080p Panasonic plasma. The GPU in the pc is a Radeon 7970 I think and is connected via HDMI. Is there a setting I on the TV or in the GPU drivers that I am missing? Also when set to 1080p I get black boards at the sides of the screen when using the PC.