You will have a response (maybe) if you post in the correct forum. As it says at the top of the page :
WELCOME TO THE GENERAL DISCUSSION FORUM
Use this space to post questions and discussions related to AMD that do not fit into the other forums.
For example; game promotions, benchmark scores, etc.
The correct forum > Graphics
Before you post, however, why don't you use the 'search' feature of the forum to read the hundreds of identical posts concerning CS:GO and black bars? Some going back years. And you can assume that any answer you get will be the same as has been posted.
try DDU and go back to the previous known working driver
be sure to let us know the GPU and other hardware you have