I had a similar issue, the sarcastic/cynic side of me says that this was Apple's way of making us want to upgrade to a new 6. Fortunately my provider offered 20

I had a similar issue, the sarcastic/cynic side of me says that this was Apple's way of making us want to upgrade to a new 6. Fortunately my provider offered 200 bucks for my 4s and sold the 6 for 200, so I did. You are right though, painful was the best way to describe it. Even plugging in power there was a noticeable pause before the phone would acknowledge it and some applications seemed just moribund. In the end I am quite pleased with the 6, I do think iOS8 is a step back in some instances but the hardware is able to out power the designers dreams and programmers faults. Now if I can find a case to remove the slipperiness of this new phone