On Page 1 I mentioned my hardware. In the beginning of XP11 I had quite low FPS with some planes as well (e.g. the Quest Kodiak). After watching some yt-Tutorials on how to set up your graphics it is much much better now. For those who never didi this before a "Hot Tip"!
I have a quite simple system (i7-6500U, up to 3,1GHz with a GTX 950M) and after reloading the plane and before deleting the preference folder I had 20fps. Enough, to fly it quite smoothly!
A stunning aircraft, simply awesome. Will buy it the day it's gonna be released. I hope the interior will get better, but as you mentioned above this will happen.
I assume you will become very very rich!