[abjKT26nO8]

Just because an average user isn't able to quite put a finger on their frustration and its source, doesn't mean it isn't there. Studies show that even though users often won't be able to see that it's the performance of the program that is infuriating, they will be more nervous using it anyway and will prefer to use a faster alternative.

When phones with touch screens entered the market, we'd often put up with the latency of touch interaction, but these were irritating nevertheless. Then the early iPhones showed how low the latency could be and how much more pleasant using it is. iPhones degraded in this regard since then and Android phones didn't catch up even to the current iPhones. And I'll never use an Android, one of the main reasons being exactly this: latency.