Recomendations for a new acceleration card for Mac OS 10.13.6, Mac (2012)

I have been usings the Quadro 4000 acceleration card for many years in my Mac (2012), using Mac OS 10.12 with Premiere Pro CC, and everything worked fine. There was a problem with my audio programs and I had to upgrade to OS10.13.6, and suddenly the Quadro card doesnt work. What new card would you recomend?

Paul Hoyle