One other aspect is that it appears that right after we load a map all sounds pause and only continue after we make a call to UGameplayStatics::SetGamePaused and then resume the game. When we resume it, the sounds all play as they normally should when the map has been loaded. Somehow they detect they should all pause (we have ambient sounds as well as sounds played by code or BPs). I read in the release notes that there has been added a feature in 4.14 which allow us to pause sounds, not sure if they have anything to do with that.
Another thing that’s mentioned in the 4.14 release is that sounds run on their own thread now by default, is there a way to revert this to what it was before (from the .ini file somewhere?) to make sure this has nothing to do with it?