I work in the same way. My office computer is in Bangalore on Airtel ISP and I take remote here in Bihar to do my work.
The best average ping is ~65ms.
But whenever the server is slow the ping goes to more than 200+ms.
Whenever the latency is high, the remote lags.
Earlier when I was on a 30Mbps connection, the remote used to drop or crash. Yeah, my remote system also contributed to that because it used to hang. But now the remote system is upgraded with higher RAM with
SSD and I have also updated my Internet plan to 100Mbps.
So whenever your
brother faces such an issue, ask him to check the ping of his remote system and also of
Google and Cloudfare
DNS. The ping of his remote system must be high. If only his remote system ping is high, it's his remote system hanging or slowing down. If all are high, it's obviously Railwire.
