Slow reliable peer

[ksubox]

I tested ENet library with 2 clients located far from each other: TTL 53, Ping 280 and got maximum bandwidth of reliable packets about 2Mbps
With the same conditions I got about 9MBps with LiteNetLib (C#). And TCP gives about 9-10MBps between same clients.
Local tests (localhost<->localhost) give about 300MBps.
I guess something wrong with buffering or window processing.

[Calinou]

Sending large data with UDP will always be much slower than with TCP, especially in less-than-ideal situations. I don't think ENet is designed to provide fast UDP file downloads.

[lsalzman]

It's likely you are not calling enet_host_service/enet_host_check_events often enough or in an optimal pattern.

[ksubox]

I tested different patterns and last one is:
while(true) {
int evres = enet_host_service(host, &evt, 0);
while (evres > 0) {
// do some input processing - very light, just count incoming traffic
evres = enet_host_check_events(host, &evt);
}

if (peer->reliableDataInTransit > 512 * 500)
continue;
auto res = enet_peer_send(peer, 0, packet);
}

And anyway speed almost the same (increased up to 2.5MBps from 2MBps).

So I believe problem is different from pattern usage. Could you hint where I should check in source code ?