Hi,
if I try this patch I get no AirPlay icon and no QuickSynch.
So I tryed the EFI/CLOVER/ACPI/patched/SSDT-HDMI-HD4600-Airplay.aml patch. Now I get the AirPlay icon(which I had natively with a clean install, but low framerate) and QuickSynch enabled. But on the Apple TV I get a black screen and sometimes I get a message which says that the AirPlay connection is only supported on iOS 7, OS X 10.10 etc...
I'm on Sierra 10.12.5, motherboard GA-Z97X-Gaming 5, monitor connected to a NVIDIA GeForce 1060 (primary) with Web Drivers, IGPU Intel HD 4600 (enabled, not primary)
IOReg and Clover config.plist attached.
EDIT:
Solved with dangertrouble's solution below.