I notice for ZenFone 3 stock camera app, latest version, Android 8,
Even though two other apps are using the GPS,
but the camera app still can't get an instant good fix.
E.g., Even if I am using both OSM tracker, and TowerCollector,
that doesn't mean the camera app doesn't need time to "warm up" itself to get a good (accurate) fix.
OK, I should use apps like Active GPS to ensure that.
OK, maybe this is normal, as the the tracker and collector apps are only checking every few seconds, not constantly.
OK, never mind then.