Is iOS 9 running setup processes/indexing?

[paulgandersman]

So I just installed iOS 9 GM on my 6+ and it is running slow and delayed at pretty much every action. Is this because iOS 9 is running some sort of indexing or background setup process?

 

[gsmornot]

Could be. Give it a day to sort out and charge and see how it feels. It can take a bit at first. If it continues, consider the 9.1 beta that's out. It's been fine so far.

 

[lagwagon]

It was a little rocky for about the first 30 minutes to an hour, but since then it's been very fast and smooth.

 

[dearfriendx]

It does this every new update, at least the major ones. People report awful battery life and sluggishness immediately after updating, but it's always because of indexing.

 

[T5BRICK]

Mine seemed pretty great right after the update, but I haven't had enough time to see what the battery life is going to look like.