MaLd0n I know, I have an i7 4790K on which I work perfectly. When FCPX exports iGPU sometimes works, sometimes not. At i9900K, all the time rests during export to h264, and RX580 is loaded at 100%. Could you look at my EFI? Config.plist made by friends from Hackintosh.de - supposedly specially under Asus PrimeZ390A. There are things that I do not understand. And graphics fixes other than yours. On this config.plist 10.14.4 there are no problems, audio works, sleep / wake shutdown and UHD630. But in FCPX it's worse. I will still test