[TylerE]

Now imagine Factorio in Unity. Do you expect that to be better or worse than factorio on unreal?

[kllrnohj]

I'd expect it to be equivalent since the task the engines are doing is well within both of their respective capabilities.

The engine is not simulating any of the factory logistics, that's all going to be bespoke code by the game dev and so there's no major reason to expect unity or unreal to behave meaningfully different here.

[TylerE]

Sure there is: C# is substantially less performant than C++ code.

[kllrnohj]

C# has a pretty good FFI system that can call into C++ code. Unity itself does that, after all, it's not entirely written in C#

[TylerE]

Factorio is insanely well optimized. Any overhead is going to be noticeable.