Building performant UIs has become a lost art across the entire industry. As a junior engineer I was given a hard time if any screen did not load in 250ms sayin

Building performant UIs has become a lost art across the entire industry. As a junior engineer I was given a hard time if any screen did not load in 250ms saying that was the cliff beyond which humans perceive things as slow. Now I have had multiple bugs I filed for a web based tool being too slow (> 30s load times) closed because the tool is working as intended.