I am running a Mac Pro (Early 2009) tower w El Capitan and After Effects 2015 my current graphics card is a Quadro 4000. I am working on a rather large project and I have begun to run into problems with previews. I think the problem is the graphics card - I guess the Quadro 400 is no longer supported?
What card would you recommend I should I upgrade to? I am not familiar with the current offerings.