Rooted Samsung Galaxy Note 3 Issues topic

Hi,

This is the first time i have Rooted my phones and I need suggestions please on what I can do to make it faster,

Honestly before I upgraded to kitkat, the performance of the phone was superb, never lags Data is almost as stable as possible and never had an issue with any of my apps,

After I upgraded to Kitkat then Rooted the phone Via Odin, Everytime I unlock the phone It Lags, and it have never done that before.

And I accedentally disabled the Knox after rooting.. I also need help in reactivating the knox in my Device.

Last Thing i need Help on how to insta Cyanogen MOD on my device.

Thanks in Advance..