I have a 40PFL5007K/12. Smart tv experience for me is nothing but lag. While using the search option in the app gallery after putting the 3rd letter the lag starts and results in a complete freeze for my TV, after which I am forced to turn off my TV. No other button on the remote brings any response from my TV. Overall SMART TV is so laggy for me. Is that normal? Moving from one app to another takes about 2 seconds HELP!!!