[PC] Muffled Voices and Sound Issues

While playing mass effect 2 le I noticed that sometimes everyone’s voices were muffled heavily along with some of the other sounds but not always

while closing and opening the game usually helps it still is annoying cause it happens almost every time i play

it also makes the cutscenes unberable 

i am using headphones connected to a monitor and audio settings are set to stereo

i am playing on pc so thanfully it doesn't take long for me to boot it up again