I have a 2015 70D w/ MCU1. I find that since latest v9 (currently, on 2018.50.6), my browser regularly freezes/becomes completely inoperative. This is aside from the normally pathetically slow browser performance* since day 1, when it's actually working.
by "regularly", I mean the browser seems to freeze up every few days, since v9. Never noticed this happen before v9. A reboot is required to get back to normal glacial-speed browsing.
by "inoperative", I mean you can scroll through and pick a favorite but absolutely nothing then happens in the browser window - no excruciatingly slow advance of the progress bar that you've come to expect. No response if you tap on the URL bar to try to type. No response if you click to refresh the current URL. Nothing. just a blank window staring back forever, until you reboot
* btw, yes about a year ago there was an update that improved the browser speed a bit. The benchmark numbers did improve a bit after that update. But in practice, still painfully slow and almost unusable.
I hope this promise of a new browser will include fixing this for MCU1 cars