Ok, so I've given that a go.
I first used the DSDT.aml file that I had already generated using SysReport. I fed that into SSDTime and generated
SSDT-EC.aml SSDT-HPET.aml SSDT-PLUG.aml SSDT-USBX.aml patches_Clover.plist
SSDT-EC.dsl SSDT-HPET.dsl SSDT-PLUG.dsl SSDT-USBX.dsl patches_OC.plist
I had 4 of the existing amls in ACPI folder (looks like EC + USB were combined)
SSDT-AWAC.aml SSDT-EC-USBX-DESKTOP.aml SSDT-PLUG-DRTNIA.aml SSDT-PMC.aml
I removed 3 of them except PMC since there didnt seem to be a replacement for that one and ended up with:
SSDT-EC.aml SSDT-HPET.aml SSDT-PLUG.aml SSDT-USBX.aml SSDT-PMC.aml
Added the patches to config.plist and updated the Add section.
Shutdown, reboot reset nvram. Same as before.
I tried again removing USBX on the basis of the comment on the thread. Sadly no change either.
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On the 2nd thread, I did the USBX but I didnt understand what to ender for the device path in point 9.
And point A.XOSI seemed windows specific.
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