So I tried AFR 1 and 2 but ended up leaving it on nVidia recommended (Custom) and it's running fine on my laptop (2x8700M) using DX9. It did run in DX11, but not all that well, but given the cards in question, that's not a surprise.
I'm so glad it runs acceptably on my laptop. I've got a desktop that just kills it with everything maxed out (DX11), but having portable Civ is awesome.