[2021] Audio cutting out

so whats happening is when I start the game audio is fine no issues music plays I hear all the mouse clicks. when I start a game saved or a new one. just prior to launch the audio starts cutting in and out. if i Leave the main game screen and go into a sub menu screen the audio\music returns with no issues. when I go back into game play\resume sound starts cutting out again.
I've uninstalled and reinstalled the game with no change.

Additional findings found that when a game is launched new or saved, the game starts switching rapidly between my two audio devices (standard speakers and digital audio device). this only happens for Anno 1800 not any other game I play. when I quit Anno my sound device returns to normal\default.