This appears on both the 15.7 and the 15.6 beta drivers. When Screen Filtering is set to extra high, there are white artifacts like these in certain areas. I am using an xfx r9 280 gpu
Steam Community :: Screenshot see the white on his legs
Steam Community :: Screenshot there is a white outline around the edges of the trees in the background.
Does anyone else have this problem? It seems to be caused either by screen space reflections or depth of field.