Big ip waf- Event logs:Application: Requests delay loading in GUI

Hi,

Few days before, i am observing in my big ip waf gui that, Event logs->Application->Requests are not loading in real-time. around 30 minutes delay observing to list the application log.  where as in my remote syslog server big -ip WAf logs receiving real-time. help me to resolve this issue:

Note: Screen shoty attached

regards

Chris