How do you make stars twinkle in multiplayer?

[Phobos]

I have added stars to sky like this

Code Select Expand

Stars()
{
NumStars(5000);
RandomSeed(1);
TwinkleFactor(10.0);
TwinkleFrequency(10.0);
Color(255, 255, 255, 255);
XBOX()
{
BrightStarPercent(70.0);
AlphaMin(15);
ColorSaturation(0.5);
}
PC()
{
BrightStarPercent(85.0);
AlphaMin(15);
ColorSaturation(0.7);
}
PS2()
{
StarTexture("fx_star");
BrightStarPercent(10.0);
AlphaMin(10);
ColorSaturation(0.2);
}
}


And they sparkle just fine in single player, but not in multiplayer. They are just dull and static, is there something I have to add to the sky, LUA, or anywhere else to make them twinkle in MP as they do in SP?