Deterioration of the sound of ground units

About two weeks ago the sounds were perfect on the ground units, now one of the updates has degraded to the point where the game is practically unplayable as if the sound channels are washed out and mixed up, the sound effects are humming. Anyone have any suggestions for new settings or anything? Several people reported the given problem within the game, thank you unfortunates for the new mess!!! I use headphones and i tried stereo, 5.1, 7.1 ect…!