> And with Unreal Engine, the modern C++ standard is C++14, right?
Unreal Engine depends on C++20 at this point.
https://dev.epicgames.com/documentation/unreal-engine/epic-c...
When I went on a business trip for screen golf program project back then, it was UE4(CPP14), By your introduction UE5 onward, it's 20. I've updated my knowledge.