public void run() {
            for (int i = 0; i < 4096; i ++) {
                Actor a = new TestActor(Vector3f.newRandom(100));
                a.id = new ActorId(id);
                actorSetRef.add(a);
                for (Actor it: actorSetRef)
                    if (it.id.getPlayerId() != id && (i & 15) == 12)
                        actorSetRef.remove(it);
            }
        }