[HELP] Early EFI boot failure when iGPU is enabled (SMBIOS: MacPro7,1)

Hi all,

My hack has been running stable (kinda) for a while and now I would like to enable the integrated GPU for HEVC decoding and stuff. But it doesn't work, if I have it then Recovery and installer won't boot at all (see photo attached). Sometimes the actual macOS will boot, but then my thunderbolt card stops working. I have a AKiTiO HDD box attached, the system can sometimes see the disks but it won't mount and after a while it disappears. And after a reboot it also fails to boot. I'm using the latest Clover release and MacPro7,1 SMBOIS, if needed I'll attach my EFI folder.

Thanks for any help.

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https://preview.redd.it/j5qzba8y0zp51.jpg?width=4032&format=pjpg&auto=webp&s=b506e7e6042ffddd59c5b83cc7836427d4f55319