@avx117,
Attached is a Thunderbolt SSDT for you to try with the flashed GC-Titan Ridge. It assumes the card is in the bottom long slot, but if it's somewhere else we can just modify the PCI path accordingly. The two files attached in the ZIP are used together. If you already have SSDT-DTPG.aml in your OC/ACPI folder then it's not necessary to replace it.
Attached is a Thunderbolt SSDT for you to try with the flashed GC-Titan Ridge. It assumes the card is in the bottom long slot, but if it's somewhere else we can just modify the PCI path accordingly. The two files attached in the ZIP are used together. If you already have SSDT-DTPG.aml in your OC/ACPI folder then it's not necessary to replace it.