r9 290x HDMI -> displayport refresh problem after 16.7.3

Hi all!

I have a sapphire VaporX 290x connected to my TV Samsung 4k with CLUB3D Displayport 1.2 to HDMI 2.0 UHD and HDMI cable 4k @60hz.

It working perfectly until 16.7.3. After this relase of drive, my refresh it's locked @30hz (at 4k of curse). I have also trying changing OS win8.1 ->win10 64bit, but nothing changed.

How can I fix the problem? it's frustrating always reroll to 16.7.3 ( Vega, im waiting for you )

Thanks and sorry for my bad eng