A possible cause of program freezing is Windows management of hardware ports. Essentially, Windows has a default configuration of automatically turning off ports when they are idle.
Here’s an example of a scenario: You’re flying with your yoke or gamepad. After a few minutes, you move your mouse, either on purpose or accidentally. But Windows has suspended power to the mouse port, and there is a lag while the mouse/Windows wakes up the port. Meanwhile, MSFS appears to freeze, but it’s actually waiting for an input that is late or maybe even never coming. The results depend on your mix of OS , hardware and device (multiple variables), so it appears the incidents are random and inconsistent.
I resolved this issue by opening Windows Device Manager and unchecking the power management box in every USB, WiFi and Bluetooth item that has a power management tab. It does not change configuration or functionality of those items. I’ve had zero freezes since then.
I provided a long-winded, oops, I mean detailed explanation in this post:
msfs-long-random-freezes-at-all-stages-1-13-16-0/369761/22