Multiple UDP sockets - beyond logic

I'm writing a simple game that requires continuous connection to multiple UDP Servers. Communication works like a charm when I test it using multiple console applications in Visual Studio.

One console application has multiple UDP clients connected to servers (other console applications). At each iteration loop without any delay I send to all services a message and get response instantly (thousands messages send and received per second). No latency as I’m testing it on a single PC each...

Multiple UDP sockets - beyond logic