Yeah, even on magenta Max the fundamental limit seems to always be network capacity and no amount of priority gets you enough. I'm sure some edge cases it helped but eh. Now that I don't need unlimited data and rely on having it realized I should switch to at least try it out, took like 30 min because say what you will about TMobile they are fairly pro consumer when it comes to migration tools. I literally did it all through the app seamlessly and they automatically canceled everything an buttoned it up when I had no devices, numbers or outstanding balances. I didn't have to call anyone or answer a survey or any bullshit, just a small box on the transfer page asking me to reconsider.

Personally they've treated me well as a customer apart from the price for a single line being eye watering.