We haven't benchmarked this specific use case. However, cursors in asyncpg do data prefetching (the exact number of prefetched rows is configurable), so I expe

We haven't benchmarked this specific use case. However, cursors in asyncpg do data prefetching (the exact number of prefetched rows is configurable), so I expect that asynchronous iteration should be pretty fast (and still faster than psycopg2).