I suppose stress isn't the correct term. My main concern is, if the jackshaft continues to turn after the door is closed, the cables go slack and slip off the drums. The newer Genie models are equipped with spring loaded "cable keepers" which take up some of this slack but only to a point. It is critical that the down stop position is set correctly and that the setting is maintained accurately by the opener electronics. The same holds true for the open or up stop position.
The old Craftsman overhead openers used mechanically operated switches to control the open & closed stops. Once set, they rarely, if ever, needed adjustment. With the lightning storms we get and the frequent power surges, it remains to be seen how well these electronically controlled systems hold up.