[bjpbakker]

You're correct about the card, sorry about that. Got confused I suppose. Indeed I meant to say I have the GT 750.

[joshstrange]

I should have added this in my edit but I'll put it here:

I stand corrected. I DO think it's wrong for Apple to drop support for something they shipped, especially since it's just over 4 years old. I thought this issue was limited to people who had Mac Pro's or Hackintosh's and put an unsupported card in it. I'll admit I've only used 13" MBP's for the last 10+ years until my most recent MBP and so dedicated graphic cards wasn't in my wheelhouse. I honestly thought they stopped ALL Nvidia cards back in 2009ish.

[johnmw]

As a sibling comment pointed out, it seems it does appear to be supported? I have the same machine:

  Chipset Model:	NVIDIA GeForce GT 750M
  Type:	GPU
  Bus:	PCIe
  PCIe Lane Width:	x8
  VRAM (Dynamic, Max):	2048 MB
  Vendor:	NVIDIA (0x10de)
  Device ID:	0x0fe9
  Revision ID:	0x00a2
  ROM Revision:	3776
  Automatic Graphics Switching:	Supported
  gMux Version:	4.0.8 [3.2.8]
  Metal:	Supported, feature set macOS GPUFamily1 v4