Display Port Audio Working - 1080ti
Ended up running Multibeast , Customize, Nvidia Graphics Fixup.
I already had the kexts but this fixed it anyway. I had also run this with 10.13.3 so it needs to be run again.
In my kext folder I have latest appleALC.ket, Lilu.kext, NvidiaGraphicsFixup.kext...