Galaxy S6 :: Lock Screen Clock Delay

Seems like when I wake up the phone, it takes a second for the clock to change to the correct time. Phone is locked, pressing the power button unlocks the display and the time stamp is from when the phone was locked, a second later the correct time changes.I've tried clearing cache on the following services, but the issue is still there. If i lock the phone and unlock it within a few minutes the time is synch fine and there is no delay. If i leave the phone locked for more than 5 minutes than the delay is noticeable.

Clock
Clock
Clock (Digital_easy)