Of course every delay is a potential interruption to focus which costs way, way more than the delay itself, so much so it's not worth calculating the actual delay's 'lost time'.<p>In fact even a momentary delay (my macbook now seems to often stutter for 2-3 seconds switching spaces) is an opportunity for your focus to drift (why is this damn thing so slow, I should get a new machine, actually, I should lookup the latest thinkpad, maybe I can tune memory use in the meantime, how <i>do</i> you tune macos memory, can you even?, etc ...).