Speaking (or rather writing) as a software developer, the answer is pretty simple. Too much change, not enough stability. MSFS 2020 has never been stable since day 1, with numerous updates. Add onto that all the different addons including hardware, plus a background of the changing OSs (W10 and W11 updates, some significant) and I’m (almost) surprised it works at all. I really like & enjoy MSFS, running on a laptop with W10 and not many addons (15 items in my Community folder, inc. 3 purchased planes). It works well for me, but then I only fly GA and keep it simple.
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