LG G5 lagging while displaying time

A

AC Question

It has always on display i.e. it shows time, date and other stuff when locked and rest is black screen.
However, this screen also turns off when it is pocket or you cover the proximity sensor. when it is taken out of pocket( when the proximity sensor detects no near-by objects), it shows outdated time for 1-2 seconds and then updates the time. For example, it will show 3:00 pm for 1-2 seconds then updates to actual time 3:20 pm. This gets very annoying sometimes. Is there solution for this?
Thanks