@TMobile HomeISP 5g broken

Last year the launch TMobile HomeISP 4g modem was replaced with a shiny new Nokia 5g21 Gateway.

Since then my network performance has cratered. Simply put #ThisIsNot5G.

So let's get into the weeds of just how terrible the current modem is to use on the one tower available versus a tethered phone ALSO on TMobile 5G.