Cable does not support 4k@60hz, computer switches back to 30hz immediately (cable bandwidth limitation). I also tried HDR but the computer doesn't even recognize that the TV supports HDR and yes I have confirmed that the TV is capable of it. . If I lower the resolution or refresh rate I can enable HDR but this cable (Cable Creations) doesn't even recognize that the TV supports HDR which was my reason for buying this cable as it was advertised as 4k@60hz and HDR . Here is the model number of my TV in case anyone wants to make sure