Major power cut and now low ip profile

Question

HI i am using the home hub 4 and have been getting line speeds of close to 2mb for the last two years and very stable but ever since a 24hr long major power cut i have a speed of 1.3mb why is this ? ive posted the bt wholesale test results and the router stats 
When contacting the BT Broadband helpdesk, the agent might ask you for details about your BT Home Hub. This page contains all of the information they are likely to request.
1. Product name:
BT Home Hub
2. Serial number:
+068340+NQ33601726
3. Firmware version:
Software version 4.7.5.1.83.8.130.1.17 (Type A) Last updated 24/11/13
4. Board version:
BT Hub 4A
5. ADSL uptime:
0 days, 00:40:00
6. Bandwidth:
448 / 1632
7. Data sent/received:
6.5 MB / 32.4 MB
8. Broadband username:
[email protected]
9. BT FON:
No
10. 2.4 GHz Wireless network/SSID:
grahamsteviesofia
11. 2.4 GHz Wireless connections:
Enabled (802.11 b/g/n (Recommended)) 20 MHz, WPS enabled
12. 2.4 GHz Wireless security:
WPA and WPA2
13. 2.4 GHz Wireless channel:
Automatic / 1
14. 5 GHz Wireless network/SSID:
grahamsteviesofia
15. 5 GHz Wireless connections:
Enabled (802.11 n 40 MHz (Recommended)) 20/40 MHz, WPS enabled
16. 5 GHz Wireless security:
WPA2
17. 5 GHz Wireless channel:
Automatic / 40
18. Firewall:
Disabled
19. MAC Address:
18:62:2c:0b:11:02
20. VPI/VCI:
0 / 38
21. Modulation:
G.992.1 Annex A
22. Latency type:
Interleaved
23. Software variant:
24. Boot loader:
FAQ
1. Best Effort Test: -provides background information.
Download  Speed
1.3 Mbps
0 Mbps
2 Mbps
Max Achievable Speed
 Download speedachieved during the test was - 1.3 Mbps
 For your connection, the acceptable range of speeds is 0.8 Mbps-2 Mbps.
 IP Profile for your line is - 1.44 Mbps
2. Upstream Test: -provides background information.
Upload Speed
0.37 Mbps
0 Mbps
0.45 Mbps
Max Achievable Speed
Upload speed achieved during the test was - 0.37Mbps
 Additional Information:
 Upstream Rate IP profile on your line is - 0.45 Mbps
We were unable to identify any performance problem with your service at this time.
It is possible that any problem you are currently, or had previously experienced may have been caused by traffic congestion on the Internet or by the server you were accessing responding slowly.
If you continue to encounter a problem with a specific server, please contact the administrator of that server in the first instance.
Solved!
Go to Solution.

Answer 1

The one thing it does not show is your noise margin. If you go to hub manager then troubleshooting then logs then you are looking for 2 lines when hub last connected to the internet which give your connection speed and noise margin. If you find them can you post
the drops in connevtion due to the power cuts have probably increased your noise margin resulting in a lower connection speed and therefore lower profile.  Your profile is correct for your current connection speed
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