What happened to your connection at 9am Factorial?
tbh I don't know why, but during that time, my SNR was 'flapping' between 6 and 9dB.
I have my line speed limited as it's very prone to interleaving. Despite it being 320m to the cab, I have a 17.4dB attenuation. With only the speed limit set on the modem (Billion 8800NL), it syncs at 9dB SNR without anything forcing it to. It will sync at 6dB when left to its own devices but then ES's go up and DLM acts... All stats
here if you want to inspect.