Most voices are muffled, some sound effects. I have double checked everything, made sure I'm using the right audio setup ext...

I looked up the issue and found no solutions. Some info I dug up pointed to a recent hotfix as the issue. Diablo 3 is the only game that gives me sound issues right now.

I'm using stereo though I have tried pretty much all the other sound modes. I also have tried selecting my sound device manually.