McDonalds actually seems to have learned to take latency seriously. When their touch screen ordering systems were first deployed, the delay between tapping on an item or button was quite noticeable. These days the systems respond nearly instantaneously. I'm very glad there are people inside such a large organization that pay attention to that aspect of usability.
Now if only every other website on the internet would learn that latency matters...
Now if only every other website on the internet would learn that latency matters...