This has been a thing for at least 15+ years. In fact, when computers were a bit slower, I would notice a perceptible lag in my mouse movement when this happene

This has been a thing for at least 15+ years. In fact, when computers were a bit slower, I would notice a perceptible lag in my mouse movement when this happened. Honestly, there are better ways to measure productivity based on other parameters, taking screenshots is just silly.