Although the minimum system requirements for Wolfenstein 3D is a 286 CPU, I would recommend a 386 SX-25 or faster for optimum gamplay.
I can think of so many examples of minimum system requirements being quoted for software but, when you try to run it on those minimum specifications, you soon realise that it can hardly keep up.
For example:
Doom 1 - minimum is a 386 CPU but, for optimum gamplay, I would recommend a 486 DX2-66
Windows 95 - Microsoft quoted a minimum requirement of any 386 DX CPU with 4 MB of RAM. Try playing a Windows 95 game, apart from Solitaire, on a 386 DX-25 (you'd probably end up bashing in the keyboard with the mouse out of frustration 😀).