Mere 25-30 years ago I saw some very chatty Java builds run faster if the terminal window was obscured or minimized. Slow console output held back the compilers.

In about 2013 I was an intern at Microsoft and my mentor showed me that if you were running something that streamed a lot to the terminal, it would run faster if you covered it with another window (but didn't minimize it, for some reason I don't recall). I was surprised this kind of trick was still a thing.