What use cases do you know of that would make >450Mbps speeds noticeable? (And I mean actually noticeable, not "this movie will take few seconds less to copy")

What use cases do you know of that would make >450Mbps speeds noticeable? (And I mean actually noticeable, not "this movie will take few seconds less to copy") Backups are incremental. Data copies are usually used for a small subset of files. Any common hardware attachments need way less.