So based on your comment it would seem QW 787 custom track won’t really work till they fix the issue you mentioned above correct?
SOME custom routes might result in some airplanes reacting differently, depending on their ground handling. Now you have an easier way to access the increased freedom of a route creation, you can run more easily into discovering differences in ground handling between different airplane models.
Again, GSX can offer airplane developers several ways to overcome this, but they must implement some kind of interface with GSX. For example, and airplane can communicate to GSX its own maximum steering angle, but as far as I know, only the FS Labs Airbus supports this, because they came up with that idea.
In addition to that, I think there are two different issues at play here:
- Alarms in the cockpit, ARE surely something generated by the airplane systems, and they surely CAN be fixed by the airplane developer, if they checked if GSX is pushing. But if the developer is unable/unwilling to do so, they can be usually fixed by deselect the option to raise the airplane during pushback in GSX.
- Shaking/bouncing over the terrain, might just be a result of the airplane ground handling reacting to the tow truck steering, and are likely depending on the actual path taken. But not only, the scenery terrain itself can have an effect on this.