iPhone 5 with iOS 8 = Super fast and smooth but that was with install from itunes but

[DBZmusicboy01]

Also keeping the normal data.
What I did was left around 3.5 GB free of data and once installed it worked PERFECT...

Most of the problems HAS to be from OTA update version.
Not the itunes version,

 

[B.A.T]

Yay.