Disconnections are quite normal on the Internet where nothing is safe or guaranteed. Think about how far the signal has to travel from your computer to the remote server. Once it leaves your router it has to travel on national and international networks passing through tens or hundreds of other switches or routers and at any point on this long road a lag or interruption can occur. So, even if you think that your Internet provider is excellent, reliable and guaranteed, once the signal has left its network and routed on national or international networks nothing and no one guarantees that the packets will arrive at their destination. Since an audio or video stream must always be constant and uninterrupted, when a problem occurs somewhere in the network, there is a possibility that the connection will drop. In these cases you can try an investigation to understand where the problem is (between your computer and the remote server).

In Configuration \ Webcast \ Options we activate the option "In case of network test failure"

When this option is active, if there are connection drops or slowdowns, MB STUDIO immediately executes a ping command and a tracert to the server (2 black command prompt-type windows will be visible for a few seconds). The results are saved in the LogWebcast folder and their analysis could help to identify the point where the connection is delayed or dropped.
Exactly MB STUDIO will create a log in the LogWebCast folder containing the Ping and another containing the tracert towards the streaming server.
If you don't know what Ping is, study here: https://en.wikipedia.org/wiki/Ping_(networking_utility) 
If you don't know what Tracert is, study here: https://en.wikipedia.org/wiki/Traceroute
If the logs show delays or anomalies, then contact the technical support of your streaming server or your internet provider and provide them with the logs to verify the problem.

A perfect connection depends on many factors and often it's also a matter of luck. More information on "packet loss" : https://en.wikipedia.org/wiki/Packet_loss

The shorter the distance to travel, the less likely it is to have problems: this is why it is preferable to use streaming servers that are close by.
If you type tracert serveraddress from the Windows command prompt, you will see the path that the signal must take to get to the server, the shorter the better.

Even the best internet connection can occasionally suffer from packet loss, however if the problem is recurrent and occurs especially at certain times or days it is a good idea to report the problem to both your internet provider and the streaming server provider.

In the MB STUDIO statistics window you can see how many network errors have occurred for each encoder:

 TRYING 2 SERVERS

Another way to find the point of the network that has a problem is to activate a second encoder to a server located in another country or city than the first (even just for a few days). So, if the disconnection occurs simultaneously in both servers, the problem could be near us (our router or our internet provider), if instead one of the 2 servers works regularly it is a good idea to contact the manager of the problematic server also explaining that the connection with the other server works without problems, this should be enough for them to do an investigation.