I remember when I had ADSL2, I would get increased packet loss when it rained. After I failed to find the culprit, technicians from ISPs tried to debug it to no

I remember when I had ADSL2, I would get increased packet loss when it rained. After I failed to find the culprit, technicians from ISPs tried to debug it to no avail. It turned away when the connection got upgraded from ADSL2 to VDSL2.