again a book about physics…
Can you summarize for me what your issue / question is ? 
https://forums.flightsimulator.com/t/about-the-community-help-center-category/120429?u=michamma
That all the other sims on market offer the same performance , or why these compare with xplane 12 ?
I can never recommended to buy the most expensive hardware you find and that hardware have a limited lifetime is hopefully nothing new 
We have so many topics about hardware-advices where users can find some interessting in it , and without that we have to discuss in MSFS forum a topic from the XPlane 12 forum.