Ok,
It seems to be some kind of timing bug.
Could be overflow or maybe it's a bug in QueryPerformanceCounter.
For now I'll assume it's a bug in my timing code.
Still how a timing bug leads to little packets confuses me ?
It seems impossible.
Maybe it's an operating system bug after all, not sure though
Very strange.
More investigation will need to be done
Bye,
Skybuck.