Yep, this has been happening to me too. 2nd straight day of downloading this ffxiv - H2017.06.06.0000.0001b patch which is 22.7 GB.

Now, I will say that the last 2 days I've had 2 brownouts lasting 1 second each time. It's hot outside after all. I expect the occasional brownout, but I certainly don't expect this nonsense with the patch downloads. Anyways, my PS4 was on and logged in the first time it happened. But today my PS4 was in rest mode. Judging from other comments, correlation is not causation since it has happened to people just closing the application or logging off?

Anyways, those are my experiences. After this crap downloads - again - I think I'll test it out by first logging off and logging back on to see if the download triggers again. Then I'll fully close the application and observe. Then I'll do a rest mode and observe and then I'll completely shut off the PS4 and then see if I get the same issue.

Why is Square silent on this as it seems to be affecting a non insignificant amount of people? This is FAR FAR FAR more frustrating than the server congestion and MSQ instance overloading everyone is getting. This is "I entirely quit my sub" territory until I get a concrete answer and solution to this bug. I'm wasting bandwidth on this crap that, as far as I know, isn't doing a thing as my total space on the HDD isn't changing for the FFXIV installation as before. More to that, I'm not in the game proper. At least with the instances congestion you can still do other stuff. Here I'm wasting time and bandwidth staring at a useless download