the graphics switching Amd

Hello Dear friends. Play World of tanks. Graphics are so-so, but once I pressed the button pause break the image blinked, and appeared a very different picture. Color bright rich, the shadows just a class, generally the quality was 10 times better but restarting the game was the same sad picture until you press pause. But with the advent of drivers 16.11.5 is not helping the game folds and unfolds and the graphics is not changed. Tell me pliz what to do? I have been everywhere can't find.