Sluggishness after Lollipop? topic

I am in the UK, yesterday connected to Kies, Lollipop update was available so I downloaded and installed, the phone has not been happy since, pressing the home button causes a redraw. I went to make a phone call today, from the time I hit call until the actual time it started dialing was 7 seconds.

I am aware a factory reset might cure the issue but I'd rather it was a last resort as can't be bothered reinstalling everything. Does anyone else have this issues?