Why does Tox messenger send files at 300Kb/s?

Question

Computer networks

I've always noticed that qTox has speed issues.
For example, send a file at home from a laptop to a PC, and vice versa. Or send a file from Virtual PC,
Speed ​​is always limited to 300Kb or something like that.
But how can the speed be slow when I transfer the file inside the PC.
(IPv6 and UDP are enabled in both Tox) Tox says that it is recommended to keep these checkboxes enabled.
But then the question becomes why is the speed in the home grid and the speed even with the Virtual Machine So low?
Skype and other programs are even faster forwarded within the router.
And the most important question: How to increase the speed in Tox??????

Answer 1

flash drive
if you don’t rummage into encryption - play Skype, it also knows how to send locally

Answer 2

I did not use Tox, but I will make an assumption by analogy with XMPP. In Jabber, you can transfer files in-band or over a p2p connection. In the first case, IP-shniks are not fired, but the file is broken into small pieces and sent in the same way as the messages - through the server and all routing. It turns out slowly, because the servers have an anti-flood timeout.
I assume that they did it in Tox in a similar way, with the same result. By analogy with Jabber, I suggest looking at the Tox protocol settings in Miranda NG (it is supported there). Miranda developers usually carefully implement all the features of the protocols, and if the implementation is mature, it can be used as a reference. If there is no setting, then no. Then alas. You can also ask the developers of Miranda NG or read on their forum.