Recently, MSFS keeps starting in windowed every time I launch it. Even when I closed it in full-screen mode. The first 3 splash screens are in full-screen mode though but as soon as it starts checking for updates, it switches to windowed mode and stays there until I manually switch it back to full-screen.
Yes and there is no audio during the dev screen logo.
Also, when I am midflight and move my mouse to do something, there is a moment of freeze, then the engines turn off or the trim gets screwed up. I have no proof that this is connected but my gut says it is. Started happening around the same time.