Hi RoyalKing,

Thanks for your reply. The AMD driver version is 16.150.2211.0 dated on 3/21/2016, which is the latest driver. I tried using 3 generic 6 foot long hdmi cables. The results were same. Since the max resolution is 1080p with CAC-1070, I wonder if a good cable would make my tv to display 4k/60hz.

I also tried to use AMD Radeon Setting tool to change virtual settings. The max settings available were 2048×1536 or 2560×1440 at 60Hz. However virtual settings don’t produce good images.

The issue could be related to the tv or graphic card. I doubt that an expensive hdmi cable would make any difference as my generic hdmi cables with CAC-1070 can’t even display 4k/30hz resolution not mention 4k at 60hz. (Without CAC-1070, the cables can reliably display 4k/30hz on the tv)

Thanks.