Does PyQT5 or urllib3 make it slower?

I am using urllib3.PoolManager to get a Request like that:

    import urllib3
    import requests

    http = urllib3.PoolManager()

    for x in range(5000):
        r = http.request('GET', PlayerCard)  # PlayerCard is always a different url.
        img = QImage()
        img.loadFromData(r.data)
        self.PlayerBanner[i].setPixmap(QPixmap(img)) # Dont mind the i, its a different variable i use!

now i take it a bit far, and use this 5000 times (phew.. thats much) with different urls at the same time! It takes a while to load all, and with PyQT5 to set a pixmap to something it takes again longer.

Of course i want it to be FASTER and not like 4-5 minutes long.

Now my question is: Is PyQT5 the Problem or urllib3.Poolmanager that it takes longer? If there is an answer, how can i fix it the best way?