Q: found little lagging while playing clash of clans after ugraded to ios 10.0.1...help me out please..

Did you already try to force restart the phone by holding the sleep and home button for about 10sec, until the Appel logo comes back again? you will not lose data by doing that, but it can cure some glitches after installing new software.

Als make sure to have the latest available version of the app installed.

Just try to close all the opened apps then do the hard reset by press the power and home button and keep pressing them till Apple's logo appears on the screen then release your fingers.  

anytime

You're welcome

I did the hard reset, and for me the lag is still there. Its very weird, when I scroll with my finger through my village the performance is sluggish. But when I lift my finger, suddenly it becomes supersmooth. Got the same problem in Boom Beach and Dominations too, all those 2.5D games. Annoying!