Disconnection when i'm not on the pc

[Kaippzen]

Hello everyone, I annoy you since I am looking for a solution to the disconnection problem when I am not present at the computer, since when I stop fishing, selling, buying or playing in macro mode at the time of leaving the machine, I disconnect. This does not happen when I am present. Is rare. Game with direct network cable to the machine, I do not use wifi.
I have searched and I have seen that the same happens to many, but they are old publications and in none I found a solution in this regard.
Can someone expert give me any solution? I have spoken with the support of the game and they tell me that it can be latency, how can I solve it? I also talked to my internet provider, and they tell me that it works perfectly and I have no problems: /
I live in Argentina, Fibertel 100megas provider and I have other friends nearby and no it happens to them.

Thank you