@davidlv & @Toby Goodbar - I'd have been surprised if deleting the contents of EFI and rebuilding/installing OpenCore EFI would have fixed the problem. The EFI contains none of the post-install root patches for NVidia Tesla. The only way I have recovered from a similar condition is the following:
- Try using OCLP to "Revert Root Patches" and then reinstall root patches
- If #1 doesn't work, create a new APFS volume and use a USB installer (with Open Core EFI) to install macOS to the new APFS volume. Migrate data/apps to the new macOS volume from the old (non-working).