I recently bought the Gigabyte Z370 Aorus Gaming Wifi Motherboard. I started out not being able to hear anything, then after I installed the drivers there was a hissing sound and music was distorted. I can't find what the problem is, my previous motherboard could play audio perfectly fine without any hissing or distortion.
https://www.gigabyte.com/Motherboard/Z370-AORUS-GAMING-WIFI-rev-10#kf
https://www.gigabyte.com/Motherboard/Z370-AORUS-GAMING-WIFI-rev-10#kf