Everything looks fine except Link Speed is still showing 20 Gbps when no devices are connected. It should say 40 Gbps. This is generally affected by LinkDetails in the Thunderbolt SSDT, but LinkDetails is present and correct.
So please run IORegistryExplorer and select File --> Save As... then post the saved file.
Found a typo in the Thunderbolt SSDT:
- linkDetails must start with capital letter: LinkDetails
This has been fixed in the attached SSDT. Please try this version and post screenshot of
System Information --> Thunderbolt.
@Inqnuam -- there appears to be a typo in the SSDT for Z490 Vision D (
linkDetails should be
LinkDetails).