Switched from Voda LLU to Spark ADSL today.
I'm assuming Spark now use port based auth because I didn't need to change the PPP credentials on my FritzBox - that part was great.
What wasn't so great was the fact that sync rate dropped from 9Mbps to 7.4Mbps, and ookla speedtest dropped from 8Mbps to 5.5Mbps.
What am I missing here?