The other developers 737 has an initialization period, upon loading, of 16 seconds where the engines are running. I does this so that nothing adverse will happen when you go to prepare a flight. It also allows you to load it from ANY aircraft you want so that it will flush problems out of your computer system. Then, to select a cold and dark situation, you select it from the saved panel states AND it takes another 16 seconds to make it ready. Those 32 seconds (not including the time it takes to go through the CDU pages to get to the saved panel states) are much longer than it takes me to hit F1 and G (if needed), so I don't consider it to big a problem. That does not mean that I'm saying it isn't a problem, I'm simply saying that it's not a big problem.

The other developers 747 and MD11 have caused my FSx to CTD if I load them after using another complex aircraft. I am always better off starting FSX fresh (with the default C172 cold-n-dark) THEN switching to either of them. Most of, if not all of, the developers of complex aircraft addons recommend starting their planes from the default C172 cold-n-dark setting.

So whenever I switch to any advanced addon aircraft, I switch to the default C172 first. This prevents the CTD for a while, but eventually it will CTD after I have switched aircraft about 5 times.