It's not delivering instant gratification now. More importantly, it's very standard practice to do asynchronous jobs and notify users on completion, as seen in

It's not delivering instant gratification now. More importantly, it's very standard practice to do asynchronous jobs and notify users on completion, as seen in the data export or input features on many web services. Whether users get results immediately or need to be notified is a UX issue, and a requirement that the entire system be designed to deliver results immediately sounds exactly like the kind of speculative, unconventional UX requirement that non-UX people come up with around a conference table.