This clock implementation is faulty:
https://github.com/Microsoft/ApplicationInsights-dotnet/blob/1ccd5b466451db1884b242b6a58b3e9401a1fbcf/src/Core/Managed/Shared/Extensibility/Implementation/Clock.cs#L31

This implementation will accumulate error when windows adjusts time on the computer:

public DateTimeOffset Time 
{ 
    get { return InitialTimeStamp + OffsetStopwatch.Elapsed; } 
}