I’ve just upgraded to Halo 3 and moved over to digital voice. My sync speed has now increased by 10+Mbps. Is this because the bandwidth used by the analogue phone is available for broadband.
Interestingly this is the download sync speed I got originally and the it gradually degraded over 7 years to as low as 28 Mbps and now back up to 50 Mbps. I’m not aware of any upgrades in the area and was always told it was crosstalk as more more people were added to the cabinet.
I suspect your upgrade possibly resulted in a DLM reset.