Ensure you are also registered on the TBB main site - you can use the same name however registration and logins and separate.
Then run some speedtests from there and they will be linked to your profile. When you view a speedtest there are a set of links below, select the appropriate one and post the link here so that others can see what is happening and comment.
As well as that, are you able to see your modem stats? If you can, post the key ones: Sync speeds, Max attainable, SNR and Attenuation figures as a starting point.
M H C
taurus excreta cerebrum vincit