Muffled sound and headphones showing as speakers.

I’ve just got the BlackShark V3 X Hyperspeed today, I’ve set up the headphones by gaining the 7.1 surround sound and checked if everything was connected. Then I played a video and everything just sound muffled with low quality sound plus it shows up in the settings as speakers and not headphones. I have done a disk clean and reinstalled razer synapse and nothing has worked.