Sorry, but I am ALWAYS given the clearence to start the descent too late! Sometimes it seems the controller forgets the clearence to descent and when I ask for a lower altitude due to ..... I get the correct altitude of the initial STAR point.
I put the descentrate an the used airliner to 800 ft/min and even 500 ft/min, but there is absolutely no difference.
If I make a lot of phantasy waypoints in the flightplan and put all the altitudes manually then is is OK, but this is definetively not the sense of a ATC software, I find. I want to be given a realistic TOD to the initial STAR startpoint without being forced to use the speedbrake constantly and even to lower the gear.