This is likely the result of excessive packet (data) loss. The lost packets attempt to resend, consequently clogging up the buffer - which can be described as a chunk of memory that stores packets in cases where the physical medium of the network interface cannot handle the volume data being received. The buffer overflow (also known as ‘buffer overrun’) then causes the internet to disconnect entirely.
This occurs as the result of an instability with the router or network. Unfortunately we’re not able to help with this from our end meaning you’ll need to contact your ISP. When contacting your ISP, please reference our server address which may help in identifying the underlying issue: https://5107.playfabapi.com/