That's pretty surprising and breaks my mental model of how these chips perform. Do you think that's because they don't have the raw FLOPs, something inefficient

That's pretty surprising and breaks my mental model of how these chips perform. Do you think that's because they don't have the raw FLOPs, something inefficient in the Apple/Metal rendering pipeline, something about Civ VI and how it was converted (i.e. x86 or DirectX emulation), or something else entirely? I've had no trouble with a (base) M4 mini for regular dev work, though I compile remotely and haven't played any games on it.