Lag/Skipping frames when running 3 Netstream flv videos.

Why do I have Lagie skipping frames videos when using Flash CS5 ,and 3 Netstream flv videos. If i just play 2 videos they work ok. It is not a CPU or Memory max reached. Videos are being download locally(cached anyway).

Conditions:

Windows 7

Flashplayer 10

With or without hardware aceleration - same experience

More than 2 netstream videos

CPU i7

8GB RAM

Geforce GTX 650

Windows Flash application (no Browser) / Windows Projector (tryed that too)

Result:

Videos all laggie and skipping frames

What I want:

- Magic way to fix the lag
- Alternative to load video (with cue point control and seek)

CODE:

3 x MovieClips containing :

var vid:Video=new Video(640,1080);

  this.addChild(vid);

  var nc:NetConnection = new NetConnection();

  nc.connect(null);

  var ns:NetStream=new NetStream(nc);

  vid.attachNetStream(ns);

ns.client = this;

ns.play("someVideo.flv");     // 10 MB video