Awful stats for a 34db line. With a noise margin of 15db you should be able to sync a lot faster than 3008kbps.
In any case, a 15db noise margin is usually only applied in response to poor line conditions (too many re-syncs, errors, noise, etc.). You must have a noisy line, or are maybe have your router connected at the end of a long extension cable?
If you have the newer style BT master socket (the split front type), can you remove the lower front half and plug your router (via a micro-filter) into the 'test' socket inside? That will effectively disconnect all other/internal 'phone wiring & sockets, and give you the best possible connection for your line.
Post your new stats (from when connected into the test socket).
If you don't have a newer style master, just plug straight into the master, with all other wiring out of circuit.
Note; Simply disconnecting 'phones from extension sockets will not help, it's the wiring itself that drags in the noise.
Ade
Happy New Year, people!
Giving UKFSN/Entanet a try
DL Sync 4096kbps
UL Sync 448