According to this website, as soon as round-trip time is increased, we lose a bit of our real-time capacity throughput to distant servers using default TCP Window size of 64KB.
My network bandwidth is 240mb/60mb down/up. I live in a third-world country where all CDN servers available is 2000-4000km away from me, and my round-trip time to the closest CDN server is 82ms which means my maximum attainable speed due to distance is just around ~6Mbit/s assuming the server is using default 64KB TCP window size.
I understand that opening multi download streams to certain server can help achieve max bandwidth, but sadly even with having simultaneous 32 streams at once, my download speed is still not able to reach max potential speed to the distant server.
So what can I do in this case to achieve full speeds to those servers assuming no local server is available?