I have spheres moving endlessly without any gravity. They are to move quite slowly. The problem is, they move jerkily like at a frame rate of 10 fps. Have I missed anything with the settings?:

Code:
 


FUNCTION bitaction()

{
var v[3];
my.flag8=on;
my.transparent=on;
my.alpha=80;
my.material=mat_kugel;

v.x=1000;vec_rotate(v.x,emitter.pan);//emitter=emitting entity

phent_settype(my, PH_RIGID, PH_sphere);
phent_setmass(my, 0.2, PH_sphere);
phent_setfriction(my, 0);
phent_setelasticity(my, 100, 10);
ph_setgravity(nullvector);
phent_enable(my,1);
phent_setmaxspeed( my, 1200, 500);
phent_addcentralforce ( my, v );

}


FUNCTION init_bitting()

{

you=ent_create ("sphere.mdl", emitter.x, bitaction);//emitter=emitting entity
wait(1);

}


on_e=init_bitting;