williamcorlin

Since the installer boots normally with the NVMe but becomes extremely slow or hangs when a SATA drive is connected, I’d focus on the SATA controller configuration first rather than the RX 6800 XT. Check that SATA Mode is set to AHCI and AMD RAID is disabled in the BIOS. Also, in Disk Utility, make sure you select View → Show All Devices. Since you’ve already tried CtlnaAHCIPort.kext and other SATA kexts, I’d avoid adding more blindly. It would help to check whether the SATA controller is being detected at all and review the OpenCore boot log. You could also test a different SATA port and cable, although the fact that you’ve tried several drives makes a simple drive failure less likely. Can you confirm whether the SATA drives are detected correctly in the BIOS, and whether AMD RAID is disabled? That would help narrow down whether this is a BIOS/controller issue or a macOS driver compatibility problem.