Originally Posted by benzmar
After 4.4 update, my phone is terribly facing wake up lag. I formatted more than thrice and still facing it. Soon after format phone works good for a day or two. Then this chap starts again. Good some has 3 seconds wake up lag. Mine is more than 30 seconds, and sometimes never shows. I have to keep pressing the power button to restart it. I have pin protected due to corporate email. Never had these issues in any of my previous versions of Note and also S series.
Is this something Samsung will looks into and fix. I'm finding it very difficult since when someone calls, I can't even accept call since its black. Help much appreciated.
There is a small 'stability' update after the 4.4 (kitkat) update which is around 28mb in size, I had mine last week over a month after I updated my phone to Kitkat, this small update is also meant to fix the problem some people were having with 3rd party S View cased etc.
I have noticed improved battery life after this small update but as I didn't have any issues before, then I can't say if it will fix your lag issues.