Building Object List

[ncngrr]

When I start P3Dv4.5 Pro Plus, I get "building object list" and it lasts several minutes. What is this? Is that necessary? Is there not a way to have P3D build the object list just once and remember the list instead of having to rebuild it every time I start P3D?

Thanks.

[sisoffi]

control the file airlines.cfg in programdata\lm\p3d.
delete all aircrafts add after deafults. OR delete it and regenerate all.