Hello thank you very much for this usefull forum, I have a very similar latop (Asus G750JZ)
with the same Processor and same integrated Intel card (hd 4600)
when i add the device properties on Opencore config for enable full video aceleration on the Intel hd 4600
ig-platform-id: 0600260A
device-id: 12040000
framebuffer-cursormem: 00009000
framebuffer-patch-enable: 01000000
the screen split like this on boot
Any idea?