It seems that the network change is possibly a CMTS update which enables OFDM multi-profile support.
@mcsandy ran the puma6 test, not all green like yours, but maybe a minor improvement? it's possible the CMTS for my area isn't updated. or maybe my signal levels aren't as good as yours, and that's affecting it. the DSL connection I have here is 100% green, no weird latency spikes. I'm definitely on the 18.104.22.168T2 firmware for the CODA too.
I knew you would call me out as soon as I posted that note 😉
In an attempt to get you the more techy response I would like to clarify what should the focus be on?
Are you looking for info on D3.1/OFDM or more about how it's been implemented at Rogers [keep in mind there is only so much i can share :)]