Prepar3D crashes when flying

Prepar3D can crash when it is paging terrain. This is a CPU threading issue that can be overcome by customizing CPU core usage. P3D v5.3 added job scheduler that can be used to achieve this:

https://www.prepar3d.com/SDKv5/prepar3d/getting_help/advanced_configuration.html#JobScheduler

You can find additional information about the topic from this forum thread:

http://www.prepar3d.com/forum/viewtopic.php?p=249585#p249585

Example:
[JobScheduler]
AffinityMask=65535
P3DCoreAffinityMask=65523