Also bought the new Google streaming box, have not seen any freezes yet.
The freeze issue is particularly bad when you are traveling. When you travel you basically can't record any live sports due to youtubetv's legacy type carry agreements. So you just stay on your event. But if you pause it and start building up buffer, which is normally good since you can skip commercials, it is not good now since you will get a freeze and then have no option except to go out and then back into your live event, ie you are forced to catch up to "live", and then miss how many minutes/hours you had buffered.