VLCMediaPlayerDelegate reports to UI time change each 2 seconds instead of 1

having this delegate for VLCMediaPlayerDelegate

func mediaPlayerTimeChanged(_ aNotification: Notification!) {
        print("AudioPlayer.VLCMediaPlayerDelegate.mediaPlayerTimeChanged")
        if let vlcPlayer = aNotification.object as? VLCMediaPlayer {
            debugPrint("player data:",vlcPlayer)
            print("AudioPlayer player.position: \(vlcPlayer.position)")
            print("AudioPlayer player.remainingTime.stringValue: \(vlcPlayer.remainingTime.stringValue ?? "NA")")
            let position = vlcPlayer.position
            let playedTime = vlcPlayer.time != VLCTime.null() ? vlcPlayer.time.stringValue : "00:00"
            
            delegate?.playerTrackDidChangePosition(self, position: position, playedTime: playedTime)
        }
    }

and the delegate object does this

func playerTrackDidChangePosition(_ player: AudioPlayer, position: Float, playedTime: String?) {
        updateTrackSlider(position: position, playedTime: playedTime)
        hideActivityIndicator()
    }

the track change position every two seconds

the updateTracker position is this

 func updateTrackSlider(position: Float, playedTime: String?) {
        self.trackSlider.setValue(position, animated: true)
        durationLabel.text = (playedTime != nil) ? playedTime : "00:00"
  }

and the duration label text reports only from 2 to 2 seconds, is there a way to make this one second only or is this my code two slow to report every second the time changed.