so i just flashed my sagem router to the modded software, when i try to run the target SNR margin to below 100 i don't seem to get a higher sync rate, colud my line have a cap on it?

Downstream Upstream
Sync Rate: 17017 Kbps 1157 Kbps
Max Rate: 20100 Kbps 1157 Kbps
Attenuation: 26 dB 13.5 dB
SNR Margin: 7.1 dB 9.1 dB
Channel: Fast
Average Error Rate: 10.97 CRC Errors/hr