You can’t get any vaguer than that. If you experience a crash you can reproduce (i.e. follow a series of steps to successfully make the app crash again), then create a thread in #bugs showing these steps. Otherwise it could be anything from low memory, CPU throttling…
This is a very known issue, and hasn’t been fixed simply because it isn’t easy (this is caused by a limitation of how processors work, other games/apps can experience similar issues if numbers are not worked with as efficiently as possible). Rest assured, solutions are actively being worked on for this since it is a bug that also annoys the developers :)
Airport layout bugs (Wrong Runways, no lines ect.-)
As you’re probably aware, maintaining airport data is a community effort (the airport editing team I run is setup for that purpose). Most major airports should be pretty accurate, but we listen to any reports you make - don’t hesitate to start a thread for a particular airport that needs some work, but just remember to be specific (i.e. don’t say “there are broken lines at the airport” - give as much detail as possible to help us address this as soon as we can).