This I really don't understand.
For the past few weeks (at least four) my downstream sync has been banded at 3069 - normal. My Plusnet IP profile has been 2500 - also normal.
My router's been off for the past two days. I switched it on again tonight and my sync speed is its usual 3069. But my Plusnet IP profile is now 2000. It was 2500 when I switched it off two days ago. So what could have caused a profile change?? The only thing I can think of is that I switched the router on after dark, when I always have a drop in SNR. But SNR was 12 when I switched on - again normal when I'm banded.
The one bit of good news is that my upstream profile has improved again and is now back to 805 at SNR 5, which is as good as it ever gets.
Does anyone have an explanation of why my IP profile should drop after the router has been off for two days? Is it something about the prevailing conditions when I switched it on (I didn't look at the IP profile until very recently - three hours after I switched the router on, so I don't know if the profile was 2000 at switch-on time or whether it changed later).
[Edit: I've just done a BT speed test, and my BT IP profile is its usual 2500. So it looks like the Plusnet profile has got out of line. I'll check again after the weekend.]
Graham