I think there are...three... maybe four problems in there.
Lets start with the waypoints. It sounds like your waypoints are too close and the flights are passing and missing them. That or the Select option is set too early. Use that to target the lead flight only after they have taken off and are on the second or even third waypoint. Use the earlier waypoints to get them slightly setup.
The crash is either because you haven't patched to 4.11.1 or something else. Not sure. Frame rate also sounds like a weird problem. I've flown all over the map and had very few frame issues... there are a couple of slightly heavier areas but it's fairly frame friendly.
Maybe a CPU loading issue?
|