I play dfc and mto on a windows 10 pc, Its a lenovo pc and pretty slow at running undertag. when playing DFC I noticed there were times where players would be kicked during the DDOS issues while I remained. its possible gms kicks out higher powered computers from its connection during ddos attacks inorder to resolve the issue as fast as possible while kicking the least players. hence why my unupdated sometimes laggy pc remains connected most of the time. This is most potentially a range aswell, as one player I spoke to used a windows 7 before he was kicked by connection errors.
there is no way to know this is entirely correct at all, but it is one of many possible explanations