17.7.2 Update - Black Screen on Hearthstone

Hi!

I have the AMD Radeon 7700M Series.

Since the last update, 17.7.2 version, I am facing an annoying problem: every time I start up the game Hearthstone, I immediately get the black screen. I can hear the sounds of starting the game, hovering over options but I cannot see anything.

 

Does someone else have this issue and/or the solution?

 

Edit: The game only works when I turn on the Power Saving option. If the settings are on High Performance, I get the Black Screen.

Thanks!