Losing connection to RDS server when working at home and office

Good day,

Some users are sometimes losing their RDP connection after mere minutes, even when the connection has been re-established 

The network speeds of a user at home are:

-30 Mbps Down
-39 Mbps Up

We have a policy saying that 'we don't support people that work at home' but it still makes me curious since the problem persists when people are working at the office.

Thanks in regard!