Optimal Mac hardware and external Thunderbolt GPU

Hi
Creating a hardware spec for an installation using mac specific OFX libraries (requiring OpenGl).

Can anyone share their recommendations for macs with a discrete video card?
As an option considering trying to implement an external Thunderbolt GPU on a Mac mini

Has anyone tried this?

This seems like such a hack at this point, I’d be very careful about using this ‘live’.

Best,
Andreas

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