Other Civ's did AI on a single core. It sounds like they've properly threaded it, so even an anemic 4 core machine might do better with Civ7 than Civ6. But a

Other Civ's did AI on a single core. It sounds like they've properly threaded it, so even an anemic 4 core machine might do better with Civ7 than Civ6. But as they say, what Moore giveth, he taketh away, so it's also likely they've eaten that 4X win elsewhere...