Why is grequests.map() so slow?

[M1ck0]

So. I am getting links from a website. Storing them in array and then iterating over them.

rs = (grequests.get(d) for d in data)
responses = grequests.map(rs)

But the grequests.map() is sooooo slow. Any idea what can cause this? Or I am not using it right. Or maybe there is better library or a way to send async request to links to check if they work.

I need to make this program fast because there is approx 70 links per page.

And also is there a way to get response code with grequests?