Low Time resolution / time sampling frequenz by QDateTime::currentDateTime()

The QDateTime::currentDateTime() function misses exact time resolution on windows os.
The Time output from the following code jumps by 15/16 ms on windows.

for(int i = 0; i < 100; i++)
{
    qDebug() << QDateTime::currentDateTime().toString( "dd.MM hh:mm:ss zzz" );
}

Output on Windows:

[...]
"20.04 14:40:21 751"
"20.04 14:40:21 751"
"20.04 14:40:21 766"
"20.04 14:40:21 766"
[...]
"20.04 14:40:21 766"
"20.04 14:40:21 766"
"20.04 14:40:21 782"
"20.04 14:40:21 782"
[...]

Under Linux (Qt 4.6.3) it works as expected with one ms difference.