A problem with time accuracy

[TheChonenOne777]

Hi!
I have been testing this library for some time and noticed that around 1% of devices has the difference between time provided by library and time on the device (auto time enabled on the device). This difference may vary from 3 minutes up to 30 minutes which is weird.

I have initialize fun in application with scheduler for background sync and I also call triggerManualSyncNow() every time the app resumes. I take time with nowOrNull() fun. Also I am calling sync both on background and foreground threads.

Could you please try to reason why this deviation happening? Maybe I am not syncing correctly or doing it too much or there is a problem with the custom server I am using which I doubt because it is an official ntp server.