I've used it in the past, so I'm very familiar with it. It just bogs the phone down while it's trying to install everything. Sometimes backup data that gets installed can be problematic as well. Starting over fresh on everything with major updates is the way to go for me.Saved me so much work after I decided to let it just install everything I already had installed. It syncs what's on your device if you selected that when you set it up. It'll install all the apps you had or you can deselect some from the list, but like I said, deselecting didn't pan out for me.
Sent from my Note 4