According to Hans-Kristian Arntzen, a prominent open-source developer working on Vkd3d, a DirectX 12 to Vulkan translation layer, Starfield is not interacting properly with graphics card drivers.
Which is, literally, not every major version. I didn’t say “all Unreal Engine versions are evolutionary steps over their predecessors”, I said “they don’t get rewritten from scratch for each major version”.
Someone else also brought up the Quake engine, which has even more evolutionary steps; even with forks like the Source engine.