I am having poor ADSL service. Slow response from websites and time outs, but line speed is ok when connected.
Tried to change DNS server to Goole 8.8.8.8. etc. It changed on the DNS setup page but not in the system summary page. It seems DNS is locked to Telkom DNS servers as confirmed by D-Link staff on there support line.

Is this valid?
12/7/2018