I did these speed tests on http://speedtest.btwholesale.com/
No, do the 2 ADSL Mode changes and report back the router stats as you 1st did. Forget speedtests for the mo', your problem is with what the router is connecting.
ROUTER STATS FOR G.992.1 (G.DMT)
ADSL STATUS
This page shows information about your ADSL connection if applicable.
Status
Configured Current
Line Status --- SHOWTIME
Link Type --- Interleaved Path
Operation Mode G992.1(G.DMT) G992.1(G.DMT)
Data Rate Information
Stream Type Actual Data Rate
Upstream 992 (Kbps.)
Downstream 1024 (Kbps.)
Defect/Failure Indication
Operation Data Upstream Downstream
Noise Margin 6.0 dB 9.2 dB
Line Attenuation 26.5 dB 43.0 dB
Indicator Name Near End Indicator Far End Indicator
Output Power 12.5 dBm 17.4 dBm
Fast Path FEC Correction NA NA
Interleaved Path FEC Correction 3 0
Fast Path CRC Error NA NA
Interleaved Path CRC Error 0 0
Loss of Signal Defect 0 0
Fast Path HEC Error STR NA NA
Interleaved Path HEC Error 0 0
Error Seconds 0 154
Statistics
Received Cells 723
Transmitted Cells 821
ROUTER STATS FOR G.992.3 (ADSL2)
ADSL STATUS
This page shows information about your ADSL connection if applicable.
Status
Configured Current
Line Status --- SHOWTIME
Link Type --- Interleaved Path
Operation Mode G992.3(ADSL2) G992.3(ADSL2)
Data Rate Information
Stream Type Actual Data Rate
Upstream 994 (Kbps.)
Downstream 982 (Kbps.)
Defect/Failure Indication
Operation Data Upstream Downstream
Noise Margin 5.1 dB 6.4 dB
Line Attenuation 24.7 dB 43.0 dB
Indicator Name Near End Indicator Far End Indicator
Output Power 12.2 dBm 18.0 dBm
Fast Path FEC Correction NA NA
Interleaved Path FEC Correction 0 8
Fast Path CRC Error NA NA
Interleaved Path CRC Error 0 0
Loss of Signal Defect 0 0
Fast Path HEC Error STR NA NA
Interleaved Path HEC Error 0 0
Error Seconds 0 154
Statistics
Received Cells 662
Transmitted Cells 769
ROUTER STATS FOR G992.5(ADSL2+)
ADSL STATUS
This page shows information about your ADSL connection if applicable.
Status
Configured Current
Line Status --- SHOWTIME
Link Type --- Interleaved Path
Operation Mode G992.5(ADSL2+) G992.5(ADSL2+)
Data Rate Information
Stream Type Actual Data Rate
Upstream 882 (Kbps.)
Downstream 896 (Kbps.)
Defect/Failure Indication
Operation Data Upstream Downstream
Noise Margin 6.4 dB 6.1 dB
Line Attenuation 24.7 dB 47.0 dB
Indicator Name Near End Indicator Far End Indicator
Output Power 12.2 dBm 18.2 dBm
Fast Path FEC Correction NA NA
Interleaved Path FEC Correction 0 0
Fast Path CRC Error NA NA
Interleaved Path CRC Error 0 0
Loss of Signal Defect 0 0
Fast Path HEC Error STR NA NA
Interleaved Path HEC Error 0 0
Error Seconds 0 154
Statistics
Received Cells 340
Transmitted Cells 379