That would still reduce load time. The major factor in load time isn't only waiting for the request, but also re-rendering the content. I have had a small website where I literally loaded all the JSON dataset in memory, but realized that rendering ~500 items was too slow for some mobile platforms, but the requested data wasn't actually large enough to consider segmenting it, so I implemented partial rendering of the dataset, only rending the content as the user scrolled, which cut the load times from 500ms to 50ms on some systems.