I am not sure what you are saying here? I never see a large delay in device updates to the server and it is normally within seconds. To access the traccar server you can use Web or Traccar Manager for Android and iOs. I would suggest you try using the Tracker Client to simulate device and make update times very small. I have a test server if you would like to check with mine - you would need to tell me your device ID so I can open the port on the firewall.
Hello,
Because I am not still able to track my device in real time (3 minutes delay), I need to know if I understand correctly the Traccar positionning tracking process. I am right?