Rate capping at ~half of sync speed?

[#1]

Hi, does anyone have any experience with consistently getting half the throughput of your sync speed please? plusnet have changed my noise margin to eliminate error but im still capped at 9-9.5mbit on a sync of ~19-20mbit.  This is a relatively new thing but happens at all times of day persists acrosss router reboots and on different machines connected via patch cable so no wifi

[#2]

Sounds like they've reset your physical lines sync DLM *dynamic line management* but you may still be capped in software.  This is also known as your IP profile and will always be a bit slower but could be wrong by a larger margin which would give you this problem.  I'd ask them to check this.

[#3]

Hi there.

From testing your line we can see that your sync rate is 19229kbps and your profile is 20700kbps which is a wee high but that won't be causing any issues. It looks like you've called us a few days ago and we've reset the line?

How are things now?