When using the Xbox Game Bar for checking fps (WIN + G or Xbox button on controller), the plane (doens’t matter which one) makes a very right bank when on auto pilot. The only way to restore it is to disengage auto pilot, stable the plane and then re-engage autopilot.
Does this sound familiar?
G or Win G might be bound to something in the sim, and you are triggering two things at once perhaps.
Well the Xbox button on my controller also triggers the “right bank”.
If you go into the controllers page, in Options, there are two boxes on the left. One will tell you what functions are available based on what you put in that box. The other will tell you what is bound to the button you next press. I think that is the second one. I would be interested to know what happens if you mouse click on that second box, then tap the XBox button on your controller.