Around 2.1/2 weeks ago I had a line rate of over 51Mbps with a sync rate of >50Mbps and actual download speed of 48-49Mbps.
On 11/04/16 after the first OR visit line rate dropped to 47.5Mbps with a sync of around 46.5Mbps and download speeds of around 45Mbps
On 21/04/16 line rate dropped to 41Mbps with a sync of around 40Mbps with download speeds of just over 38Mbps.
I managed to get my line rate back up to around 44Mbps by strategic rebooting and putting my old Mk2 filter back on in place of the Mk3, I tend to get better download speed with the mk2 but worse upload.
This morning I was synced at 44Mbps and after openreach I am now synced at 42Mbps with the mk2 filter but my line speed has now dropped to 41.7Mbps:
From DSLStats:
xdslctl info --stats
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 6535 Kbps, Downstream rate = 41752 Kbps
Bearer: 0, Upstream rate = 6431 Kbps, Downstream rate = 42102 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 5.9 6.1
Attn(dB): 22.0 0.0
Pwr(dBm): 12.7 4.1
VDSL2 framing
Bearer 0
MSGc: 19 33
B: 239 201
M: 1 1
T: 64 5
R: 0 16
S: 0.1814 0.9983
L: 10584 1747
D: 1 1
I: 240 218
N: 240 218