gtx1080 dp audio not work

hi, everyone

Installed mac on my pc success finally, but it lost dp audio

I search may issues and try inside this forum, it not success............

help plz, thx

cpu: i7-7700k
mb: asus z270f-gaming
ram: 8g x2 ddr4
videio crard: Gigabyte GeForce GTX 1080 Aorus Extreme 8g 11gbps