This update method is far better then updating via the horrid outdated launcher/updater.
When i switched from PS3 to PS4 i managed fine but one of the updates .. long story short i had to re-install the game with all the patches and kept getting patch download errors and missed out on a month of sub time.
I have yet to have issues with the changes but i leave my PS4 on rest mode. It has never taken several hrs...
I can admit however that downloading on PS4 is slower then my laptop, the PS4 gets it's speed throttled down perhaps because of some of the hardware that was used, not sure