More important than speed is the perception of speed and how users react it. I usually don't notice things are slow until I see my wife using them. She has abso

More important than speed is the perception of speed and how users react it. I usually don't notice things are slow until I see my wife using them. She has absolutely zero patience with tech, so if she taps/clicks something and it doesn't react in 0.3s, she's going to tap or click it again. I realized how slow my last smartphone was when she tried to used it and got extremely annoyed, then I couldn't unsee it anymore. I am used to just waiting a few seconds even when there's no UI response at all, and don't get annoyed at slower stuff, unless it's something like an ssh session or a video-game, something where input is constantly causing output. But to answer you: I think it really depends on which software and which hardware you're talking about. There's no general answer here.