2015 Macbook PRO, no sound when playing Black Ops 3

OK, so I have a 2015 macbook pro, the highest end macbook apple makes, well its runs perfect in OS X, and when I bootcamp into my Windows 10 Pro, everything works perfectly, no driver problems or anything, then when Black OPS 3 released, I downloaded it via steam, and the works perfectly except for one thing NO SOUND, unless I plug in headphones into the headphone jack or I hook the macbook pro to a tv via HDMI, thing is I can't hear anything when I don't have it hooked up to the tv or headphones. Sound is only made when I do Windows 10 sounds, like increase the volume or decrease it. The computer works just fine with perfect functioning sound and all until I launch Black OPS 3, no other game I got from Steam has this issue. Does anyone know how I can get this "patched" or a workaround yet? I'm sure I can't be the only one out there with this problem. I'm new to steam, so I'm not sure if Black OPS 3 is getting all the latest updates when they are release, I did check the properties of the game in the Steam app, and it's set to receive updates, I'm not sure what to do, please someone help ASAP, huge let down for me at the moment. Also my device manager says everything is working just fine no driver conflicts.