this will kill most of the machines have more than 200 tasks

Why will it kill them? I thought streaming responses were specifically created in order to give the UI (or CLI) only pieces of information at a time, e.g. "whatever the current page size in the UI for element X is". This would mean that if I could only see 20 tasks at a time, the streaming responses should be used to fetch 20 at a time and no more than that.