Dude thanks a lot. You've helped me so much. Just a sidenote. Do you use 2010-P1 as your main install of orbiter? I really like 2016 but I'm kinda getting fed up with all the compability issues. I'm considering getting a 2010 install aswell. What's the reason for using 2016. Did it improve that much other than the terrain? Maybe I should be go 2010 exclusive...
My main installation is 2010-P1 because of the current compatibility problems with 2016, and the vast repository of add-ons and utilities available for the older version.
Orbiter 2016 revolutionized Orbiter as far as texturing, terrain, mesh-detection, collision-detection, and other advanced features and additions that I cannot even name. It also prompted a revolution in the D3D9-client's development, including graphical features that really make Orbiter standout among other simulators. Orbiter 2016 has, while older versions had its own, totally redefined the simulator's quality. For a free-simulator, it has transformed itself into something that has every quality of a payware video game while maintaining its virtuousness, that is, its principles and goodwill to the community backing it.
But for the person who cannot, or does not want to, be thrust into the new era of Orbiter development, 2010 suffices equally well. The simulator is the same, but 2016 adds bells and whistles that are unnecessary to space simulation as a whole. As for the mathematics behind the simulation, I cannot speak for core improvements. But for the intent of simulation, 2010 is not to be neglected.
Until the compatibility gap is more closed between 2010 and 2016, I would recommend remaining in 2010. But make sure you get a 2016 install setup because that gap may close more quickly than anticipated.