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Switched from sky to plusnet used the router supplied worked ok.

Went out and bought the TD-W9970 worked great for the last four weeks .

Thought my web pages were loading slow done a speed test 2.5mg i am on 17mg.

Powered down the unit and rebooted back up to 17mg .

Worked for a hour or two pages loaded slow again and done speedtest back down to 2.5

Went through the set up said i could not do it automatically said you have to do it manually.

Put my plusnet router back on for the last few hours done a couple of speed tests al at 17mg

What an i doing wrong