The performance benefits can be very real if used well btw. As an example I have a request-heavy piece of code that used to take > 16hrs to run which took about

The performance benefits can be very real if used well btw. As an example I have a request-heavy piece of code that used to take > 16hrs to run which took about 2.5mins once changed to async, and that's with adding rate limiting etc so I'm not flooding external servers with requests.