Improve switching scene time

[paul23]

Well currently whenever I go to another scene from the main scene (mostly VAB and tracking station) it takes multiple minutes for the new scene to load. How can I improve this and how can I find what is causing the delay?

 

I've tried adding an SSD, I've improved my memory from 8 to 16 GB but I do not see any difference. How can I improve this?

[Geonovast]

IIRC, a major cause of this is the number of ships you have going in your save.

Reducing debris count can help.  You can either just destroy it from the tracking station or lower the "max debris" setting in your game settings.  Even if they're not set to show in the tracking view, the game's still calculating their movement.