I can’t seem to get full resolution on UHD 630 graphics despite hardware acceleration being enabled

My GPU is out for RMA so I decided to give Intelgrated graphics a try on my hackintosh for the first time. This isn’t my first rodeo so it didn’t take long to get it working but I’ve now come up against a rather annoying problem.

I’m stuck at 1280x800 when my monitor goes all the way to 2560x1600, which is rather annoying. Hardware acceleration is enabled and the iGPU shows correctly as UHD 630 1.5GB.

I’ve got an i7 8700K on an ASUS TUF Z370 Pro-Gaming.

-disablegfxfirmware is enabled
IntelGFX has the fakeID of 0x59128086
ig-platform-id is 0x59120000

I am using Lilu, whatevergreen and FakeSMC kexts

Any help in getting the full range of resolutions working on this Hack would be greatly appreciated!